View source for 1958 United States Senate elections

{{Short description|none}}
{{Use mdy dates|date=June 2020}}
{{Infobox election
| election_name      = 1958 United States Senate elections
| country            = United States
| flag_image = Flag of the United States (1912-1959).svg
| type               = legislative
| ongoing            = no
| previous_election  = 1956 United States Senate elections
| previous_year      = 1956
| next_election      = 1960 United States Senate elections
| next_year          = 1960
| seats_for_election = 36 of the 98 seats in the [[United States Senate]]
| majority_seats     = 50
| election_date      = November 4, 1958{{efn|[[#Maine|Maine election]] held on September 8, 1958; [[#Alaska|Alaska elections]] held on November 25, 1958.}}
| outgoing_members   = [[1957 United States Senate elections|1957 (TX, WI)]]
| elected_members    = [[1959 United States Senate elections in Hawaii|1959 (HI)]]
| 1blank             = Seats up<!--Alaska seats were newly elected, thus are not included in the "up" total-->
| 2blank             = Races won
| image_size         = 160x180px

| party1             = Democratic Party (US)
| image1             = Senator Lyndon Johnson (1).jpg
| leader1            = [[Lyndon Johnson]]
| leader_since1      = January 3, 1953
| leaders_seat1      = [[List of United States senators from Texas|Texas]]
| seats_before1      = '''49'''
| seats_after1       = '''64'''
| seat_change1       = {{increase}} 15
| popular_vote1      = '''21,426,124'''<ref name=Clerk/>{{efn|name="NY alliance"}}
| percentage1        = '''55.3%'''
| 1data1             = 13
| 2data1             = '''28'''

| party2             = Republican Party (US)
| image2             = [[File:William F. Knowland headshot.jpg|160x180px]]
| leader2            = [[William F. Knowland|William Knowland]]<br />(retired)
| leader_since2      = August 4, 1953
| leaders_seat2      = [[List of United States senators from California|California]]
| seats_before2      = 47
| seats_after2       = 34
| seat_change2       = {{decrease}} 13
| popular_vote2      = 16,622,338<ref name=Clerk/>
| percentage2        = 42.9%
| 1data2             = '''21'''
| 2data2             = 8

| map_image          = {{1958 United States Senate elections imagemap}}
| map_size           = 320px
| map_caption        = '''Results of the elections:'''<br />{{Legend0|#0671B0|Democratic gain}} {{Legend0|#92C5DE|Democratic hold}}<br />{{Legend0|#F48882|Republican hold}}<br />{{Legend0|#D3D3D3|No election}}<hr>''Rectangular inset ([[#Alaska|Alaska]] and [[#West Virginia|W. V.]]): both seats up for election''
| title              = [[Majority Leader of the United States Senate|Majority Leader]]
| before_election    = [[Lyndon Johnson]]
| before_party       = Democratic Party (US)
| after_election     = [[Lyndon Johnson]]
| after_party        = Democratic Party (US)
}}
The '''1958 United States Senate elections''' were elections for the [[United States Senate]] which occurred in the middle of President [[Dwight D. Eisenhower]]'s second term. Thirty-two seats of [[Classes of United States senators|Class 1]] were contested in regular elections, the new state of Alaska held its first Senate elections for its Class 2 and 3 seats, and two special elections were held to fill vacancies.

As is common in [[midterm elections|mid-term elections]], the party in the White House lost seats, but losses this year were heavy due to the [[Recession of 1958]], the [[Eisenhower Administration]]'s position on [[Right-to-work law|right-to-work issues]] that galvanized labor unions which supported Democrats, and the launch of [[Sputnik]]. This was the first time since 1934 that Democrats gained seats in this class of Senators. Democrats won both seats in West Virginia, making the last time that Democrats simultaneously flipped both of a state's Senate seats until Georgia's elections in 2020 and 2021.

The [[Democratic Party (United States)|Democratic Party]] gained a record 15 seats in this election, defeating 10 [[Republican Party (United States)|Republican]] incumbents, gaining three open Republican seats, and winning both seats from the new state of [[#Alaska|Alaska]]. This gave the Democrats a strong Senate majority of 64&ndash;34 over the Republicans, and the largest swing in the history of the Senate. After the new state of Hawaii elected [[1959 United States Senate elections in Hawaii|its first Senators in 1959]], the Senate's balance changed to 65&ndash;35.

This is only one of two occasions in U.S. history that 10 or more Senate seats changed hands in a mid-term election (the other being in [[1946 United States Senate elections|1946]]), and also one of five occasions where 10 or more Senate seats changed hands in an election, with the other occasions being in [[1920 United States Senate elections|1920]], [[1932 United States Senate elections|1932]], [[1946 United States Senate elections|1946]], and [[1980 United States Senate elections|1980]].

== Results summary ==
{| style="width:50em; text-align:center"
|+ ↓
|- style="color:white"
| style="background:{{party color|Democratic Party (US)}}; width:65.31%" | '''64'''
| style="background:{{party color|Republican Party (US)}}; width:34.69%" | '''34'''
|-
| <span style="color:{{party color|Democratic Party (US)}}">'''Democratic'''</span>
| <span style="color:{{party color|Republican Party (US)}}">'''Republican'''</span>
|}

For the November 5 and 25, 1958 regular '''and''' special elections.

''Colored shading indicates party with largest share of that row.''
{| class=wikitable style=text-align:center

|- valign=bottom
! rowspan=2 colspan=2 | Parties
| style="background-color:{{party color|Democratic Party (US)}}" |
| style="background-color:{{party color|Republican Party (US)}}" |
| style="background-color:{{party color|Other Party (US)}}" | 
! rowspan=2 | Total

|- valign=bottom
! [[Democratic Party (United States)|Democratic]]
! [[Republican Party (United States)|Republican]]
! Other

|-
! colspan=2 | [[1956 United States Senate elections|Last elections (1956)]]<br />Before these elections
| {{party shading/Democratic}} | 49
| 47
| 0
! 96

|-
! colspan=2 style="background:#bbb" | Not up
| {{party shading/Democratic}} | 36
| 26
| 0
! 62

|-
! rowspan=2 | <!-- Gap for "Not up"-->
! style="background:#ddd" | {{Small|Class 2 ([[1954 United States Senate elections|1954]])}}<!--22 DEM /10 GOP after 1954 elections, 21/11 after 1956 KY special election (replacing Barkley), 20/12 after Hoblitzell (R-WV) appointed in place of Neely (D) -->
| {{party shading/Democratic}} | 19
| 11
| 0
! 30

|-
! style="background:#ddd" | {{Small|Class 3 ([[1956 United States Senate elections|1956]])}}
| {{party shading/Democratic}} | 17
| 15
| 0
! 32

|-
| colspan=100 |

|-
! colspan=2 style="background:#bbb" | Up
| 13
| {{party shading/Republican}} | 21
| —
! 34

|-
! rowspan=2 | <!-- Gap for "Up"-->
! style="background:#ddd" | {{Small|Class 1 ([[1952 United States Senate elections|1952]]→1958)}}
| 12
| {{party shading/Republican}} | 20
| —
! 32

|-
! style="background:#ddd" | {{Small|Special: Class 2}}
| 1
| 1
| —
! 2

|-
| colspan=100 |

|-
! colspan=2 style="background:#ccc" | Incumbent retired
| 0
| {{party shading/Republican}} | 6
| —
! 6

|-
! rowspan=3 | 
! {{small|Held by same party}}
| 0
| {{party shading/Republican}} | 3
| —
! 3

|-
! {{small|Replaced by other party}}
| colspan=2 {{party shading/Democratic}} | {{Decrease}}3 Republicans replaced by {{increase}}3 Democrats<!--CA, IN, NJ-->
| —
! 3

|-
! Result
! 3
! 3
! 0
! 6

|-
! colspan=2 style="background:#ccc" | Incumbent ran
| 13
| {{party shading/Republican}} | 15
| —
! 28

|-
! rowspan=4 |
! {{small|Won re-election}}
| {{party shading/Democratic}} | 13
| 5
| —
! 18

|-
! {{small|Lost re-election}}
| colspan=2 {{party shading/Democratic}} | {{Decrease}}10 Republicans replaced by {{increase}}10 Democrats<!--CT, ME, MI, MN, NV, OH, UT, WV, WV-II (special), WY-->
| —
! 10

|-
! {{Small|Lost renomination,<br />but held by same party}}
| 0
| 0
| —
! 0

|-
! Result
! {{party shading/Democratic}} | 23
! 5
! 0
! 28

|-
| colspan=100 |

|-
! colspan=2 | New state
! {{party shading/Democratic}} | 2
! 0
! 0
! 2

|-
| colspan=100 |

|-
! colspan=2 | Total elected
! {{party shading/Democratic}} | 28
! 8
! 0
! 36

|-
! colspan=2 | Net gain/loss
| {{party shading/Democratic}} | {{Increase}}15
| {{Decrease}}13
| {{Steady}}
! 15

|-
! colspan=2 style="background:#ccc" | Nationwide vote
| {{party shading/Democratic}} | 21,426,124{{efn|name="NY alliance"|The [[Liberal Party of New York|Liberal Party]] in [[#New York|New York]] endorsed [[Frank Hogan]], a Democrat, but the Clerk of the U.S. House of Representatives did not tabulate their votes, totaling {{formatnum:275051}}, into the national Democratic total.<ref name="Clerk"/>}}
| 16,622,338
| 678,147
! 38,726,609

|-
! <!-- Gap for "Nationwide vote" -->
! Share
| {{party shading/Democratic}} | 55.33%
| 42.92%
| 1.75%
! 100%

|-
! colspan=2 | Result
! {{party shading/Democratic}} | 64
! 34
! 0
! 98

|}

Source: Clerk of the U.S. House of Representatives<ref name=Clerk>{{Cite web |last=[[Clerk of the U.S. House of Representatives]] |date=1959-03-16 |title=Statistics of the Presidential and Congressional Election of November 4, 1958 |url=http://clerk.house.gov/member_info/electioninfo/1958election.pdf |page=27<!--NC special-->, 39<!--WV special-->, 42<!--National totals (Class I regular + AK only)--> |publisher=[[U.S. Government Printing Office]]}}</ref>

== Gains, losses, and holds ==
===Retirements===
Six Republicans retired instead of seeking re-election.

{| class="wikitable sortable plainrowheaders"
|-
! scope="col" |State
! scope="col" |Senator
! scope="col" |Replaced by
|-
! [[#California|California]]
| {{Party shading/Republican}} | {{sortname|William|Knowland}}
| {{Party shading/Democratic}} | {{sortname|Clair|Engle}}
|-
! [[#Indiana|Indiana]]
| {{Party shading/Republican}} | {{sortname|William E.|Jenner}}
| {{Party shading/Democratic}} | {{sortname|Vance|Hartke}}
|-
! [[#New Jersey|New Jersey]]
| {{Party shading/Republican}} | {{sortname|H. Alexander|Smith}}
| {{Party shading/Democratic}} | {{sortname|Harrison A.|Williams}}
|-
! [[#New York|New York]]
| {{Party shading/Republican}} | {{sortname|Irving|Ives}}
| {{Party shading/Republican}} | {{sortname|Kenneth|Keating}}
|-
! [[#Pennsylvania|Pennsylvania]]
| {{Party shading/Republican}} | {{sortname|Edward|Martin|dab=Pennsylvania politician}}
| {{Party shading/Republican}} | {{sortname|Hugh|Scott}}
|-
! [[#Vermont|Vermont]]
| {{Party shading/Republican}} | {{sortname|Ralph|Flanders}}
| {{Party shading/Republican}} | {{sortname|Winston L.|Prouty}}
|}

===Defeats===
Ten Republicans sought re-election but lost in the general election.

{| class="wikitable sortable plainrowheaders"
|-
! scope="col" |State
! scope="col" |Senator
! scope="col" |Replaced by
|-
! [[#Connecticut|Connecticut]]
| {{Party shading/Republican}} | {{sortname|William A.|Purtell}}
| {{Party shading/Democratic}} | {{sortname|Thomas J.|Dodd}}
|-
! [[#Maine|Maine]]
| {{Party shading/Republican}} | {{sortname|Frederick G.|Payne}}
| {{Party shading/Democratic}} | {{sortname|Edmund|Muskie}}
|-
! [[#Michigan|Michigan]]
| {{Party shading/Republican}} | {{sortname|Charles E.|Potter}}
| {{Party shading/Democratic}} | {{sortname|Philip|Hart}}
|-
! [[#Minnesota|Minnesota]]
| {{Party shading/Republican}} | {{sortname|Edward J.|Thye}}
| {{Party shading/DFL}} | {{sortname|Eugene|McCarthy}}
|-
! [[#Nevada|Nevada]]
| {{Party shading/Republican}} | {{sortname|George W.|Malone}}
| {{Party shading/Democratic}} | {{sortname|Howard|Cannon}}
|-
! [[#Ohio|Ohio]]
| {{Party shading/Republican}} | {{sortname|John W.|Bricker}}
| {{Party shading/Democratic}} | {{sortname|Stephen M.|Young}}
|-
! [[#Utah|Utah]]
| {{Party shading/Republican}} | {{sortname|Arthur V.|Watkins}}
| {{Party shading/Democratic}} | {{sortname|Frank|Moss}}
|-
! [[#West Virginia (regular)|West Virginia (regular)]]
| {{Party shading/Republican}} | {{sortname|Chapman|Revercomb}}
| {{Party shading/Democratic}} | {{sortname|Robert|Byrd}}
|-
! [[#West Virginia (special)|West Virginia (special)]]
| {{Party shading/Republican}} | {{sortname|John D.|Hoblitzell Jr.}}
| {{Party shading/Democratic}} | {{sortname|Jennings|Randolph}}
|-
! [[#Wyoming|Wyoming]]
| {{Party shading/Republican}} | {{sortname|Frank A.|Barrett}}
| {{Party shading/Democratic}} | {{sortname|Gale W.|McGee}}
|}

===New states===
Alaska was admitted into the Union and elected two Democrats to the Senate.

{| class="wikitable sortable plainrowheaders"
|-
! scope="col" |State
! scope="col" |Senator
|-
! [[#Alaska (class 2)|Alaska (class 2)]]
| {{Party shading/Democratic}} | {{sortname|Bob|Bartlett}}
|-
! [[#Alaska (class 3)|Alaska (class 3)]]
| {{Party shading/Democratic}} | {{sortname|Ernest|Gruening}}
|}

===Post-election states===
Hawaii was admitted into the Union and elected one Democrat and one Republican to the Senate on July 28, 1959.

{| class="wikitable sortable plainrowheaders"
|-
! scope="col" |State
! scope="col" |Senator
|-
! [[#Hawaii (class 1)|Hawaii (class 1)]]
| {{Party shading/Republican}} | {{sortname|Hiram|Fong}}
|-
! [[#Hawaii (class 3)|Hawaii (class 3)]]
| {{Party shading/Democratic}} | {{sortname|Oren E.|Long}}
|}

===Post election changes===
Two Democrats left the Senate after the election. Both seats were filled by Democrats.

{| class="wikitable sortable plainrowheaders"
|-
! scope="col" |State
! scope="col" |Senator
! scope="col" |Replaced by
|-
! [[#Oregon|Oregon]]
| {{Party shading/Democratic}} | {{sortname|Richard L.|Neuberger}}
| {{Party shading/Democratic}} | {{sortname|Hall S.|Lusk}}
|-
! [[#Missouri|Missouri]]
| {{Party shading/Democratic}} | {{sortname|Thomas C.|Hennings Jr.}}
| {{Party shading/Democratic}} | {{sortname|Edward V.|Long}}
|}

== Change in composition ==
=== Before the elections ===

{| class="wikitable" style="text-align:center" width=800px

|-
| &nbsp;
| {{Party shading/Democratic}} | D{{Sub|1}}
| {{Party shading/Democratic}} | D{{Sub|2}}
| {{Party shading/Democratic}} | D{{Sub|3}}
| {{Party shading/Democratic}} | D{{Sub|4}}
| {{Party shading/Democratic}} | D{{Sub|5}}
| {{Party shading/Democratic}} | D{{Sub|6}}
| {{Party shading/Democratic}} | D{{Sub|7}}
| {{Party shading/Democratic}} | D{{Sub|8}}
| {{Party shading/Democratic}} | D{{Sub|9}}

|-
| width=50px {{Party shading/Democratic}} | D{{Sub|19}}
| width=50px {{Party shading/Democratic}} | D{{Sub|18}}
| width=50px {{Party shading/Democratic}} | D{{Sub|17}}
| width=50px {{Party shading/Democratic}} | D{{Sub|16}}
| width=50px {{Party shading/Democratic}} | D{{Sub|15}}
| width=50px {{Party shading/Democratic}} | D{{Sub|14}}
| width=50px {{Party shading/Democratic}} | D{{Sub|13}}
| width=50px {{Party shading/Democratic}} | D{{Sub|12}}
| width=50px {{Party shading/Democratic}} | D{{Sub|11}}
| width=50px {{Party shading/Democratic}} | D{{Sub|10}}

|-
| {{Party shading/Democratic}} | D{{Sub|20}}
| {{Party shading/Democratic}} | D{{Sub|21}}
| {{Party shading/Democratic}} | D{{Sub|22}}
| {{Party shading/Democratic}} | D{{Sub|23}}
| {{Party shading/Democratic}} | D{{Sub|24}}
| {{Party shading/Democratic}} | D{{Sub|25}}
| {{Party shading/Democratic}} | D{{Sub|27}}
| {{Party shading/Democratic}} | D{{Sub|26}}
| {{Party shading/Democratic}} | D{{Sub|28}}
| {{Party shading/Democratic}} | D{{Sub|29}}

|-
| {{Party shading/Democratic/active}} | D{{Sub|39}}<br />{{Small|[[#Mississippi|{{abbr|Miss.|Mississippi}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|38}}<br />{{Small|[[#Massachusetts|{{abbr|Mass.|Massachusetts}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|37}}<br />{{Small|[[#Florida|{{abbr|Fla.|Florida}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic}} | D{{Sub|36}}
| {{Party shading/Democratic}} | D{{Sub|35}}
| {{Party shading/Democratic}} | D{{Sub|34}}
| {{Party shading/Democratic}} | D{{Sub|33}}
| {{Party shading/Democratic}} | D{{Sub|32}}
| {{Party shading/Democratic}} | D{{Sub|31}}
| {{Party shading/Democratic}} | D{{Sub|30}}

|-
| {{Party shading/Democratic/active}} | D{{Sub|40}}<br />{{Small|[[#Missouri|{{abbr|Mo.|Missouri}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|41}}<br />{{Small|[[#Montana|{{abbr|Mont.|Montana}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|42}}<br />{{Small|[[#New Mexico|{{abbr|N.M.|New Mexico}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|43}}<br />{{Small|[[#North Carolina (special)|{{abbr|N.C. (sp)|North Carolina (special)}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|44}}<br />{{Small|[[#Rhode Island|{{abbr|R.I.|Rhode Island}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|45}}<br />{{Small|[[#Tennessee|{{abbr|Tenn.|Tennessee}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|46}}<br />{{Small|[[#Texas|Texas]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|47}}<br />{{Small|[[#Virginia|{{abbr|Va.|Virginia}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|48}}<br />{{Small|[[#Washington|{{abbr|Wash.|Washington}}]]}}<br />{{Small|Ran}}
| {{Party shading/Democratic/active}} | D{{Sub|49}}<br />{{Small|[[#Wisconsin|{{abbr|Wis.|Wisconsin}}]]}}<br />{{Small|Ran}}

|-
| colspan=9 align=right | '''Majority ↑'''
| rowspan=2 {{Party shading/TBD/active}} | TBD{{Sub|1}}<br />{{Small|[[#Alaska|{{abbr|Ak. (cl. 3)|Alaska}}]]}}<br />{{Small|New state}}

|-
| {{Party shading/Republican/active}} | R{{Sub|40}}<br />{{Small|[[#North Dakota|{{abbr|N.D.|North Dakota}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|41}}<br />{{Small|[[#Ohio|Ohio]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|42}}<br />{{Small|[[#Pennsylvania|{{abbr|Pa.|Pennsylvania}}]]}}<br />{{Small|Retired}}
| {{Party shading/Republican/active}} | R{{Sub|43}}<br />{{Small|[[#Utah|Utah]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|44}}<br />{{Small|[[#Vermont|{{abbr|Vt.|Vermont}}]]}}<br />{{Small|Retired}}
| {{Party shading/Republican/active}} | R{{Sub|45}}<br />{{Small|[[#West Virginia (regular)|{{abbr|W.Va. (reg)|West Virginia}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|46}}<br />{{Small|[[#West Virginia (special)|{{abbr|W.Va. (sp)|West Virginia (special)}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|47}}<br />{{Small|[[#Wyoming|{{abbr|Wyo.|Wyoming}}]]}}<br />{{Small|Ran}}
| {{Party shading/TBD/active}} | TBD{{Sub|2}}<br />{{Small|[[#Alaska|{{abbr|Ak. (cl. 2)|Alaska}}]]}}<br />{{Small|New state}}

|-
| {{Party shading/Republican/active}} | R{{Sub|39}}<br />{{Small|[[#New York|{{abbr|N.Y.|New York}}]]}}<br />{{Small|Retired}}
| {{Party shading/Republican/active}} | R{{Sub|38}}<br />{{Small|[[#New Jersey|{{abbr|N.J.|New Jersey}}]]}}<br />{{Small|Retired}}
| {{Party shading/Republican/active}} | R{{Sub|37}}<br />{{Small|[[#Nevada|{{abbr|Nev.|Nevada}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|36}}<br />{{Small|[[#Nebraska|{{abbr|Neb.|Nebraska}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|35}}<br />{{Small|[[#Minnesota|{{abbr|Minn.|Minnesota}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|34}}<br />{{Small|[[#Michigan|{{abbr|Mich.|Michigan}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|33}}<br />{{Small|[[#Maryland|{{abbr|Md.|Maryland}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|32}}<br />{{Small|[[#Maine|Maine]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|31}}<br />{{Small|[[#Indiana|{{abbr|Ind.|Indiana}}]]}}<br />{{Small|Retired}}
| {{Party shading/Republican/active}} | R{{Sub|30}}<br />{{Small|[[#Delaware|{{abbr|Del.|Delaware}}]]}}<br />{{Small|Ran}}

|-
| {{Party shading/Republican}} | R{{Sub|20}}
| {{Party shading/Republican}} | R{{Sub|21}}
| {{Party shading/Republican}} | R{{Sub|22}}
| {{Party shading/Republican}} | R{{Sub|23}}
| {{Party shading/Republican}} | R{{Sub|24}}
| {{Party shading/Republican}} | R{{Sub|25}}
| {{Party shading/Republican}} | R{{Sub|26}}
| {{Party shading/Republican/active}} | R{{Sub|27}}<br />{{Small|[[#Arizona|{{abbr|Ariz.|Arizona}}]]}}<br />{{Small|Ran}}
| {{Party shading/Republican/active}} | R{{Sub|28}}<br />{{Small|[[#California|{{abbr|Calif.|California}}]]}}<br />{{Small|Retired}}
| {{Party shading/Republican/active}} | R{{Sub|29}}<br />{{Small|[[#Connecticut|{{abbr|Conn.|Connecticut}}]]}}<br />{{Small|Ran}}

|-
| {{Party shading/Republican}} | R{{Sub|19}}
| {{Party shading/Republican}} | R{{Sub|18}}
| {{Party shading/Republican}} | R{{Sub|17}}
| {{Party shading/Republican}} | R{{Sub|16}}
| {{Party shading/Republican}} | R{{Sub|15}}
| {{Party shading/Republican}} | R{{Sub|14}}
| {{Party shading/Republican}} | R{{Sub|13}}
| {{Party shading/Republican}} | R{{Sub|12}}
| {{Party shading/Republican}} | R{{Sub|11}}
| {{Party shading/Republican}} | R{{Sub|10}}

|-
| &nbsp;
| {{Party shading/Republican}} | R{{Sub|1}}
| {{Party shading/Republican}} | R{{Sub|2}}
| {{Party shading/Republican}} | R{{Sub|3}}
| {{Party shading/Republican}} | R{{Sub|4}}
| {{Party shading/Republican}} | R{{Sub|5}}
| {{Party shading/Republican}} | R{{Sub|6}}
| {{Party shading/Republican}} | R{{Sub|7}}
| {{Party shading/Republican}} | R{{Sub|8}}
| {{Party shading/Republican}} | R{{Sub|9}}

|}

=== After the elections ===

{| class="wikitable" style="text-align:center" width=800px

|-
| &nbsp;
| {{Party shading/Democratic}} | D{{Sub|1}}
| {{Party shading/Democratic}} | D{{Sub|2}}
| {{Party shading/Democratic}} | D{{Sub|3}}
| {{Party shading/Democratic}} | D{{Sub|4}}
| {{Party shading/Democratic}} | D{{Sub|5}}
| {{Party shading/Democratic}} | D{{Sub|6}}
| {{Party shading/Democratic}} | D{{Sub|7}}
| {{Party shading/Democratic}} | D{{Sub|8}}
| {{Party shading/Democratic}} | D{{Sub|9}}

|-
| width=50px {{Party shading/Democratic}} | D{{Sub|19}}
| width=50px {{Party shading/Democratic}} | D{{Sub|18}}
| width=50px {{Party shading/Democratic}} | D{{Sub|17}}
| width=50px {{Party shading/Democratic}} | D{{Sub|16}}
| width=50px {{Party shading/Democratic}} | D{{Sub|15}}
| width=50px {{Party shading/Democratic}} | D{{Sub|14}}
| width=50px {{Party shading/Democratic}} | D{{Sub|13}}
| width=50px {{Party shading/Democratic}} | D{{Sub|12}}
| width=50px {{Party shading/Democratic}} | D{{Sub|11}}
| width=50px {{Party shading/Democratic}} | D{{Sub|10}}

|-
| {{Party shading/Democratic}} | D{{Sub|20}}
| {{Party shading/Democratic}} | D{{Sub|21}}
| {{Party shading/Democratic}} | D{{Sub|22}}
| {{Party shading/Democratic}} | D{{Sub|23}}
| {{Party shading/Democratic}} | D{{Sub|24}}
| {{Party shading/Democratic}} | D{{Sub|25}}
| {{Party shading/Democratic}} | D{{Sub|26}}
| {{Party shading/Democratic}} | D{{Sub|27}}
| {{Party shading/Democratic}} | D{{Sub|28}}
| {{Party shading/Democratic}} | D{{Sub|29}}
|-
| {{Party shading/Democratic/active}} | D{{Sub|39}}<br />{{Small|[[#Mississippi|{{abbr|Miss.|Mississippi}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|38}}<br />{{Small|[[#Massachusetts|{{abbr|Mass.|Massachusetts}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|37}}<br />{{Small|[[#Florida|{{abbr|Fla.|Florida}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic}} | D{{Sub|36}}
| {{Party shading/Democratic}} | D{{Sub|35}}
| {{Party shading/Democratic}} | D{{Sub|34}}
| {{Party shading/Democratic}} | D{{Sub|33}}
| {{Party shading/Democratic}} | D{{Sub|32}}
| {{Party shading/Democratic}} | D{{Sub|31}}
| {{Party shading/Democratic}} | D{{Sub|30}}
|-
| {{Party shading/Democratic/active}} | D{{Sub|40}}<br />{{Small|[[#Missouri|{{abbr|Mo.|Missouri}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|41}}<br />{{Small|[[#Montana|{{abbr|Mont.|Montana}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|42}}<br />{{Small|[[#New Mexico|{{abbr|N.M.|New Mexico}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|43}}<br />{{Small|[[#North Carolina (special)|{{abbr|N.C. (sp)|North Carolina (special)}}]]}}<br />{{Small|Elected{{efn|name="Appointee elected"|Appointee elected}}}}
| {{Party shading/Democratic/active}} | D{{Sub|44}}<br />{{Small|[[#Rhode Island|{{abbr|R.I.|Rhode Island}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|45}}<br />{{Small|[[#Tennessee|{{abbr|Tenn.|Tennessee}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|46}}<br />{{Small|[[#Texas|Texas]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|47}}<br />{{Small|[[#Virginia|{{abbr|Va.|Virginia}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|48}}<br />{{Small|[[#Washington|{{abbr|Wash.|Washington}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Democratic/active}} | D{{Sub|49}}<br />{{Small|[[#Wisconsin|{{abbr|Wis.|Wisconsin}}]]}}<br />{{Small|Re-elected}}
|-
| colspan=9 align=right | '''Majority →'''
| rowspan=2 {{Party shading/Democratic/active}} | D{{Sub|50}}<br />{{Small|[[#Alaska|{{abbr|Ak. (cl. 2)|Alaska}}]]}}<br />{{Small|Gain}}
|-
| {{Party shading/Democratic/active}} | D{{Sub|59}}<br />{{Small|[[#New Jersey|{{abbr|N.J.|New Jersey}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|58}}<br />{{Small|[[#Nevada|{{abbr|Nev.|Nevada}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|57}}<br />{{Small|[[#Minnesota|{{abbr|Minn.|Minnesota}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|56}}<br />{{Small|[[#Michigan|{{abbr|Mich.|Michigan}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|55}}<br />{{Small|[[#Maine|Maine]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|54}}<br />{{Small|[[#Indiana|{{abbr|Ind.|Indiana}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|53}}<br />{{Small|[[#Connecticut|{{abbr|Conn.|Connecticut}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|52}}<br />{{Small|[[#California|{{abbr|Calif.|California}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|51}}<br />{{Small|[[#Alaska|{{abbr|Ak. (cl. 3)|Alaska}}]]}}<br />{{Small|Gain}}
|-
| {{Party shading/Democratic/active}} | D{{Sub|60}}<br />{{Small|[[#Ohio|Ohio]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|61}}<br />{{Small|[[#Utah|Utah]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|62}}<br />{{Small|[[#West Virginia (regular)|{{abbr|W.Va. (reg)|West Virginia}}]]}}<br />{{Small|Gain}}
| {{Party shading/Democratic/active}} | D{{Sub|63}}<br />{{Small|[[#West Virginia (special)|{{abbr|W.Va. (sp)|West Virginia (special)}}]]}}<br />{{Small|Gain}}{{efn|Appointee defeated}}
| {{Party shading/Democratic/active}} | D{{Sub|64}}<br />{{Small|[[#Wyoming|{{abbr|Wyo.|Wyoming}}]]}}<br />{{Small|Gain}}
<!--GOP caucus-->
| {{Party shading/Republican/active}} | R{{Sub|34}}<br />{{Small|[[#Vermont|{{abbr|Vt.|Vermont}}]]}}<br />{{Small|Hold}}
| {{Party shading/Republican/active}} | R{{Sub|33}}<br />{{Small|[[#Pennsylvania|{{abbr|Pa.|Pennsylvania}}]]}}<br />{{Small|Hold}}
| {{Party shading/Republican/active}} | R{{Sub|32}}<br />{{Small|[[#North Dakota|{{abbr|N.D.|North Dakota}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Republican/active}} | R{{Sub|31}}<br />{{Small|[[#New York|{{abbr|N.Y.|New York}}]]}}<br />{{Small|Hold}}
| {{Party shading/Republican/active}} | R{{Sub|30}}<br />{{Small|[[#Nebraska|{{abbr|Neb.|Nebraska}}]]}}<br />{{Small|Re-elected}}
|-
| {{Party shading/Republican}} | R{{Sub|20}}
| {{Party shading/Republican}} | R{{Sub|21}}
| {{Party shading/Republican}} | R{{Sub|22}}
| {{Party shading/Republican}} | R{{Sub|23}}
| {{Party shading/Republican}} | R{{Sub|24}}
| {{Party shading/Republican}} | R{{Sub|25}}
| {{Party shading/Republican}} | R{{Sub|26}}
| {{Party shading/Republican/active}} | R{{Sub|27}}<br />{{Small|[[#Arizona|{{abbr|Ariz.|Arizona}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Republican/active}} | R{{Sub|28}}<br />{{Small|[[#Delaware|{{abbr|Del.|Delaware}}]]}}<br />{{Small|Re-elected}}
| {{Party shading/Republican/active}} | R{{Sub|29}}<br />{{Small|[[#Maryland|{{abbr|Md.|Maryland}}]]}}<br />{{Small|Re-elected}}
|-
| {{Party shading/Republican}} | R{{Sub|19}}
| {{Party shading/Republican}} | R{{Sub|18}}
| {{Party shading/Republican}} | R{{Sub|17}}
| {{Party shading/Republican}} | R{{Sub|16}}
| {{Party shading/Republican}} | R{{Sub|15}}
| {{Party shading/Republican}} | R{{Sub|14}}
| {{Party shading/Republican}} | R{{Sub|13}}
| {{Party shading/Republican}} | R{{Sub|12}}
| {{Party shading/Republican}} | R{{Sub|11}}
| {{Party shading/Republican}} | R{{Sub|10}}
|-
| &nbsp;
| {{Party shading/Republican}} | R{{Sub|1}}
| {{Party shading/Republican}} | R{{Sub|2}}
| {{Party shading/Republican}} | R{{Sub|3}}
| {{Party shading/Republican}} | R{{Sub|4}}
| {{Party shading/Republican}} | R{{Sub|5}}
| {{Party shading/Republican}} | R{{Sub|6}}
| {{Party shading/Republican}} | R{{Sub|7}}
| {{Party shading/Republican}} | R{{Sub|8}}
| {{Party shading/Republican}} | R{{Sub|9}}
|}

{|
|- valign=top
! Key:
|
{| class=wikitable
|-
| align=center width=35px {{Party shading/Democratic}} | D{{Sub|#}}
| [[Democratic Party (United States)|Democratic]]
|-
| align=center width=35px {{Party shading/Republican}} | R{{Sub|#}}
| [[Republican Party (United States)|Republican]]
|}
|}

== Race summaries ==

=== Special / new state elections ===
In the special elections, the winners were seated during 1958 or before January 3, 1959. In the new state elections, the winners were seated with the new Congress on January 3, 1959. Ordered by election date.

{| class="wikitable sortable"

|- valign=bottom
! rowspan=2 | State
! colspan=3 | Incumbent
! rowspan=2 | Results
! rowspan=2 | Candidates

|-
! class="unsortable" | Senator
! class="unsortable" | Party
! class="unsortable" | Electoral history

|-
! [[#North Carolina (special)|North Carolina]]<br />(class 2)
| [[B. Everett Jordan]]
| {{Party shading/Democratic}} | Democratic
| nowrap | 1958 {{Small|(Appointed)}}
| Interim appointee [[1958 United States Senate special election in North Carolina|elected]] '''November 4, 1958'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{sortname|B. Everett|Jordan}}''' (Democratic) 70.0%
* {{Party stripe|Republican Party (US)}}[[Richard C. Clarke Jr.|Richard C. Clarke, Jr.]] (Republican) 30.0%
}}

|-
! [[#West Virginia (special)|West Virginia]]<br />(class 2)
| [[John D. Hoblitzell Jr.|John D. Hoblitzell, Jr.]]
| {{Party shading/Republican}} | Republican
| nowrap | 1958 {{Small|(Appointed)}}
| {{Party shading/Democratic}} | Interim appointee lost election.<br />New senator [[1958 United States Senate special election in West Virginia|elected]] '''November 4, 1958'''.<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{sortname|Jennings|Randolph}}''' (Democratic) 59.3%
* {{Party stripe|Republican Party (US)}}[[John D. Hoblitzell Jr.|John D. Hoblitzell, Jr.]] (Republican) 40.7%
}}

|-
! [[#Alaska|Alaska]]<br />(class 2)
| colspan=3 rowspan=2 | Alaska admitted as a state January 3, 1959.
| {{Party shading/Democratic}} | New state.<br />New senator [[1958 United States Senate elections in Alaska|elected]] '''November 25, 1958'''.<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{sortname|Bob|Bartlett}}''' (Democratic) 83.8%
* {{Party stripe|Republican Party (US)}}[[R. E. Robertson]] (Republican) 15.0%
* {{Party stripe|Write-in}}[[Keith Capper]] (write-in) 1.2%
}}

|-
! [[#Alaska|Alaska]]<br />(class 3) 
| {{Party shading/Democratic}} | New state.<br />New senator [[1958 United States Senate elections in Alaska|elected]] '''November 25, 1958'''.<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{sortname|Ernest|Gruening}}''' (Democratic) 52.6%
* {{Party stripe|Republican Party (US)}}[[Mike Stepovich]] (Republican) 47.4%
}}

|}

=== Elections leading to the next Congress ===
In these regular elections, the winners were elected for the term beginning January 3, 1959; ordered by state.

All of the elections involved the Class 1 seats.

{| class="wikitable sortable"

|- valign=bottom
! rowspan=2 | State
! colspan=3 | Incumbent
! rowspan=2 | Results
! rowspan=2 | Candidates

|-
! Senator
! Party
! Electoral history

|-
! [[#Arizona|Arizona]]
| {{Sortname|Barry|Goldwater}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1952 United States Senate election in Arizona|1952]]
| Incumbent [[1958 United States Senate election in Arizona|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|Barry|Goldwater}}''' (Republican) 56.1%
* {{Party stripe|Democratic Party (US)}}[[Ernest McFarland]] (Democratic) 43.9%
}}

|-
! [[#California|California]]
| {{Sortname|William|Knowland}}
| {{Party shading/Republican}} | Republican
| nowrap | 1945 {{Small|(Appointed)}}<br />[[1946 United States Senate special election in California|1946 {{Small|(special)}}]]<br />[[1952 United States Senate election in California|1952]]
| {{Party shading/Democratic}} | Incumbent retired to [[1958 California gubernatorial election|run for California Governor]].<br />New senator [[1958 United States Senate election in California|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Clair|Engle}}''' (Democratic) 57.0%
* {{Party stripe|Republican Party (US)}}[[Goodwin Knight]] (Republican) 42.9%
}}

|-
! [[#Connecticut|Connecticut]]
| {{Sortname|William A.|Purtell}}
| {{Party shading/Republican}} | Republican
| nowrap | 1952 {{Small|(Appointed)}}<br />1952 {{Small|(Retired)}}<br />[[1952 United States Senate election in Connecticut|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Connecticut|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Thomas J.|Dodd}}''' (Democratic) 57.3%
* {{Party stripe|Republican Party (US)}}[[William A. Purtell]] (Republican) 42.4%
* {{Party stripe|Write-in}}[[Vivien Kellems]] (write-in) 0.3%
}}

|-
! [[#Delaware|Delaware]]
| {{Sortname|John J.|Williams|John J. Williams (politician)}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in Delaware|1946]]<br />[[1952 United States Senate election in Delaware|1952]]
| Incumbent [[1958 United States Senate election in Delaware|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|John J.|Williams|John J. Williams (politician)}}''' (Republican) 53.3%
* {{Party stripe|Democratic Party (US)}}[[Elbert N. Carvel]] (Democratic) 46.7%
}}

|-
! [[#Florida|Florida]]
| {{Sortname|Spessard|Holland}}
| {{Party shading/Democratic}} | Democratic
| nowrap | 1946 {{Small|(Appointed)}}<br />[[1946 United States Senate election in Florida|1946]]<br />[[1952 United States Senate election in Florida|1952]]
| Incumbent [[1958 United States Senate election in Florida|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Spessard|Holland}}''' (Democratic) 71.2%
* {{Party stripe|Republican Party (US)}}[[Leland Hyzer]] (Republican) 28.8%
}}

|-
! [[#Indiana|Indiana]]
| {{Sortname|William E.|Jenner}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1944 United States Senate special election in Indiana|1944 {{Small|(special)}}]]<br />[[1946 United States Senate election in Indiana|1946]]<br />[[1952 United States Senate election in Indiana|1952]]
| {{Party shading/Democratic}} | Incumbent retired.<br />New senator [[1958 United States Senate election in Indiana|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Vance|Hartke}}''' (Democratic) 56.5%
* {{Party stripe|Republican Party (US)}}[[Harold W. Handley]] (Republican) 42.4%
* {{Party stripe|Prohibition Party}}[[John Henry Stelle]] (Prohibition) 1.1%
}}

|-
! [[#Maine|Maine]]
| {{Sortname|Frederick G.|Payne}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1952 United States Senate election in Maine|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Maine|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Edmund|Muskie}}''' (Democratic) 60.8%
* {{Party stripe|Republican Party (US)}}[[Frederick G. Payne]] (Republican) 39.2%
}}

|-
! [[#Maryland|Maryland]]
| {{Sortname|J. Glenn|Beall}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1952 United States Senate election in Maryland|1952]]
| Incumbent [[1958 United States Senate election in Maryland|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|J. Glenn|Beall}}''' (Republican) 51.0%
* {{Party stripe|Democratic Party (US)}}[[Thomas D'Alesandro Jr.]] (Democratic) 49.0%
}}

|-
! [[#Massachusetts|Massachusetts]]
| {{Sortname|John F.|Kennedy}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1952 United States Senate election in Massachusetts|1952]]
| Incumbent [[1958 United States Senate election in Massachusetts|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|John F.|Kennedy}}''' (Democratic) 73.2%
* {{Party stripe|Republican Party (US)}}[[Vincent J. Celeste]] (Republican) 26.2%
}}

|-
! [[#Michigan|Michigan]]
| {{Sortname|Charles E.|Potter}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1952 United States Senate election in Michigan|1952 {{Small|(special)}}]]<br />[[1952 United States Senate election in Michigan|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Michigan|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Philip|Hart}}''' (Democratic) 53.6%
* {{Party stripe|Republican Party (US)}}[[Charles E. Potter]] (Republican) 46.1%
}}

|-
! [[#Minnesota|Minnesota]]
| {{Sortname|Edward J.|Thye}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in Minnesota|1946]]<br />[[1952 United States Senate election in Minnesota|1952]]
| {{Party shading/DFL}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Minnesota|elected]].<br />'''Democratic–Farmer–Labor gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Minnesota Democratic–Farmer–Labor Party}}{{Aye}} '''{{Sortname|Eugene|McCarthy}}''' (DFL) 52.9%
* {{Party stripe|Republican Party (US)}}[[Edward J. Thye]] (Republican) 46.6%
* {{Party stripe|Socialist Workers Party (US)}}[[William M. Curran]] (Socialist Workers) 0.5%
}}

|-
! [[#Mississippi|Mississippi]]
| {{Sortname|John C.|Stennis}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1947 United States Senate special election in Mississippi|1947 {{Small|(special)}}]]<br />[[1952 United States Senate election in Mississippi|1952]]
| Incumbent [[1958 United States Senate election in Mississippi|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|John C.|Stennis}}''' (Democratic)
* ''Unopposed''
}}

|-
! [[#Missouri|Missouri]]
| {{Sortname|Stuart|Symington}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1952 United States Senate election in Missouri|1952]]
| Incumbent [[1958 United States Senate election in Missouri|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Stuart|Symington}}''' (Democratic) 66.5%
* {{Party stripe|Republican Party (US)}}[[Hazel Palmer]] (Republican) 33.6%
}}

|-
! [[#Montana|Montana]]
| {{Sortname|Mike|Mansfield}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1952 United States Senate election in Montana|1952]]
| Incumbent [[1958 United States Senate election in Montana|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Mike|Mansfield}}''' (Democratic) 76.2%
* {{Party stripe|Republican Party (US)}}[[Lou W. Welch]] (Republican) 23.8%
}}

|-
! [[#Nebraska|Nebraska]]
| {{Sortname|Roman|Hruska}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1954 United States Senate special elections in Nebraska|1954 {{Small|(special)}}]]
| Incumbent [[1958 United States Senate election in Nebraska|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|Roman|Hruska}}''' (Republican) 55.6%
* {{Party stripe|Democratic Party (US)}}[[Frank B. Morrison]] (Democratic) 44.4%
}}

|-
! [[#Nevada|Nevada]]
| {{Sortname|George W.|Malone}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in Nevada|1946]]<br />[[1952 United States Senate election in Nevada|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Nevada|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Howard|Cannon}}''' (Democratic) 57.7%
* {{Party stripe|Republican Party (US)}}[[George W. Malone]] (Republican) 42.3%
}}

|-
! [[#New Jersey|New Jersey]]
| {{Sortname|Howard Alexander|Smith}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1944 United States Senate special election in New Jersey|1944 {{Small|(special)}}]]<br />[[1946 United States Senate election in New Jersey|1946]]<br />[[1952 United States Senate election in New Jersey|1952]]
| {{Party shading/Democratic}} | Incumbent retired.<br />New senator [[1958 United States Senate election in New Jersey|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Harrison A.|Williams}}''' (Democratic) 51.4%
* {{Party stripe|Republican Party (US)}}[[Robert Kean]] (Republican) 46.9%
}}

|-
! [[#New Mexico|New Mexico]]
| {{Sortname|Dennis|Chávez}}
| {{Party shading/Democratic}} | Democratic
| nowrap | 1935 {{Small|(Appointed)}}<br />[[1936 United States Senate special election in New Mexico|1936 {{Small|(special)}}]]<br />[[1940 United States Senate election in New Mexico|1940]]<br />[[1946 United States Senate election in New Mexico|1946]]<br />[[1952 United States Senate election in New Mexico|1952]]
| Incumbent [[1958 United States Senate election in New Mexico|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Dennis|Chávez}}''' (Democratic) 62.7%
* {{Party stripe|Republican Party (US)}}[[Forrest S. Atchley]] (Republican) 37.3%
}}

|-
! [[#New York|New York]]
| {{Sortname|Irving|Ives}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in New York|1946]]<br />[[1952 United States Senate election in New York|1952]]
| {{Party shading/Republican/Hold}} | Incumbent retired.<br />New senator [[1958 United States Senate election in New York|elected]].<br />Republican hold.
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|Kenneth|Keating}}''' (Republican) 50.8%
* {{Party stripe|Democratic Party (US)}}[[Frank Hogan]] (Democratic) 48.4%
}}

|-
! [[#North Dakota|North Dakota]]
| {{Sortname|William|Langer}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1940 United States Senate election in North Dakota|1940]]<br />[[1946 United States Senate election in North Dakota|1946]]<br />[[1952 United States Senate election in North Dakota|1952]]
| Incumbent [[1958 United States Senate election in North Dakota|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|William|Langer}}''' (Republican) 57.2%
* {{Party stripe|North Dakota Democratic-NPL Party}}[[Raymond Vensdel]] (Democratic-NPL) 41.5%
}}

|-
! [[#Ohio|Ohio]]
| {{Sortname|John W.|Bricker}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in Ohio|1946]]<br />[[1952 United States Senate election in Ohio|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Ohio|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Stephen M.|Young}}''' (Democratic) 52.5%
* {{Party stripe|Republican Party (US)}}[[John W. Bricker]] (Republican) 47.5%
}}

|-
! [[#Pennsylvania|Pennsylvania]]
| {{Sortname|Edward|Martin|Edward Martin (Pennsylvania politician)}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in Pennsylvania|1946]]<br />[[1952 United States Senate election in Pennsylvania|1952]]
| {{Party shading/Republican/Hold}} | Incumbent retired.<br />New senator [[1958 United States Senate election in Pennsylvania|elected]].<br />Republican hold.
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|Hugh|Scott}}''' (Republican) 51.2%
* {{Party stripe|Democratic Party (US)}}[[George M. Leader]] (Democratic) 48.4%
}}

|-
! [[#Rhode Island|Rhode Island]]
| {{Sortname|John|Pastore}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1950 United States Senate special election in Rhode Island|1950 {{Small|(special)}}]]<br />[[1952 United States Senate election in Rhode Island|1952]]
| Incumbent [[1958 United States Senate election in Rhode Island|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|John|Pastore}}''' (Democratic) 64.5%
* {{Party stripe|Republican Party (US)}}[[Bayard Ewing]] (Republican) 35.5%
}}

|-
! [[#Tennessee|Tennessee]]
| {{Sortname|Albert|Gore Sr.}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1952 United States Senate election in Tennessee|1952]]
| Incumbent [[1958 United States Senate election in Tennessee|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Albert|Gore Sr.}}''' (Democratic) 79.0%
* {{Party stripe|Republican Party (US)}}[[Hobart F. Atkins]] (Republican) 19.0%
}}

|-
! [[#Texas|Texas]]
| {{Sortname|Ralph|Yarborough}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1957 United States Senate special election in Texas|1957 {{Small|(special)}}]]
| Incumbent [[1958 United States Senate election in Texas|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Ralph|Yarborough}}''' (Democratic) 74.6%
* {{Party stripe|Republican Party (US)}}[[Roy Whittenburg]] (Republican) 23.6%
}}

|-
! [[#Utah|Utah]]
| {{Sortname|Arthur V.|Watkins}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1946 United States Senate election in Utah|1946]]<br />[[1952 United States Senate election in Utah|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Utah|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Frank|Moss}}''' (Democratic) 38.7%
* {{Party stripe|Republican Party (US)}}[[Arthur V. Watkins]] (Republican) 34.8%
* {{Party stripe|Independent}}[[J. Bracken Lee]] (Independent) 26.4%
}}

|-
! [[#Vermont|Vermont]]
| {{Sortname|Ralph|Flanders}}
| {{Party shading/Republican}} | Republican
| nowrap | 1946 {{Small|(Appointed)}}<br />[[1946 United States Senate special election in Vermont|1946 {{Small|(special)}}]]<br />[[1952 United States Senate election in Vermont|1952]]
| {{Party shading/Republican/Hold}} | Incumbent retired.<br />New senator [[1958 United States Senate election in Vermont|elected]].<br />Republican hold.
| nowrap | {{Plainlist | 
* {{Party stripe|Republican Party (US)}}{{Aye}} '''{{Sortname|Winston L.|Prouty}}''' (Republican) 52.2%
* {{Party stripe|Democratic Party (US)}}[[Frederick J. Fayette]] (Democratic) 47.8%
}}

|-
! [[#Virginia|Virginia]]
| {{Sortname|Harry F.|Byrd}}
| {{Party shading/Democratic}} | Democratic
| nowrap | 1933 {{Small|(Appointed)}}<br />[[1933 United States Senate special election in Virginia|1933 {{Small|(special)}}]]<br />[[1934 United States Senate election in Virginia|1934]]<br />[[1940 United States Senate election in Virginia|1940]]<br />[[1946 United States Senate election in Virginia|1946]]<br />[[1952 United States Senate election in Virginia|1952]]
| Incumbent [[1958 United States Senate election in Virginia|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Harry F.|Byrd}}''' (Democratic) 69.3%
* {{Party stripe|Independent}}[[Louise Wensel]] (Independent) 26.3%
}}

|-
! [[#Washington|Washington]]
| {{Sortname|Henry M.|Jackson}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1952 United States Senate election in Washington|1952]]
| Incumbent [[1958 United States Senate election in Washington|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Henry M.|Jackson}}''' (Democratic) 67.3%
* {{Party stripe|Republican Party (US)}}[[William B. Bantz]] (Republican) 31.4%
}}

|-
! [[#West Virginia|West Virginia]]
| {{Sortname|Chapman|Revercomb}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1942 United States Senate election in West Virginia|1942]]<br />1948 {{Small|(Lost)}}<br />[[1956 United States Senate special election in West Virginia|1956 {{Small|(special)}}]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in West Virginia|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Robert|Byrd}}''' (Democratic) 59.2%
* {{Party stripe|Republican Party (US)}}[[Chapman Revercomb]] (Republican) 40.8%
}}

|-
! [[#Wisconsin|Wisconsin]]
| {{Sortname|William|Proxmire}}
| {{Party shading/Democratic}} | Democratic
| nowrap | [[1957 United States Senate special election in Wisconsin|1957 {{Small|(special)}}]]
| Incumbent [[1958 United States Senate election in Wisconsin|re-elected]].
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|William|Proxmire}}''' (Democratic) 57.1%
* {{Party stripe|Republican Party (US)}}[[Roland J. Steinle]] (Republican) 42.7%
}}

|-
! [[#Wyoming|Wyoming]]
| {{Sortname|Frank A.|Barrett}}
| {{Party shading/Republican}} | Republican
| nowrap | [[1952 United States Senate election in Wyoming|1952]]
| {{Party shading/Democratic}} | Incumbent lost re-election.<br />New senator [[1958 United States Senate election in Wyoming|elected]].<br />'''Democratic gain'''.
| nowrap | {{Plainlist | 
* {{Party stripe|Democratic Party (US)}}{{Aye}} '''{{Sortname|Gale W.|McGee}}''' (Democratic) 50.8%
* {{Party stripe|Republican Party (US)}}[[Frank A. Barrett]] (Republican) 49.2%
}}
|}

== Closest races ==
'''Eleven races had a margin of victory under 10%:'''

{| class="wikitable sortable"
! State
! Party of winner
! Margin
|-
! [[#Wyoming|Wyoming]]
| data-sort-value=1 {{Party shading/Democratic}} | Democratic (flip)
| 1.6%
|-
! [[#Maryland|Maryland]]
| data-sort-value=-0.5 {{Party shading/Republican}} | Republican
| 2.0%
|-
! [[#New York|New York]]
| data-sort-value=1 {{Party shading/Republican}} | Republican
| 2.4%
|-
! [[#Utah|Utah]]
| data-sort-value=1 {{Party shading/Democratic}} | Democratic (flip)
| 3.9%
|-
! [[#Vermont|Vermont]]
| data-sort-value=1 {{Party shading/Republican}} | Republican
| 4.4%
|-
! [[#New Jersey|New Jersey]]
| data-sort-value=1 {{Party shading/Democratic}} | Democratic (flip)
| 4.5%
|-
! [[#Ohio|Ohio]]
| data-sort-value=1 {{Party shading/Democratic}} | Democratic (flip)
| 5.0%
|-
! [[#Alaska (class 3)|Alaska (class 3)]]
| data-sort-value=1 {{Party shading/Democratic}} | Democratic (flip)
| 5.2%
|-
! [[#Minnesota|Minnesota]]
| data-sort-value=1 {{Party shading/DFL}} | Democratic (flip)
| 6.3%
|-
! [[#Delaware|Delaware]]
| data-sort-value=1 {{Party shading/Republican}} | Republican
| 6.6%
|-
! [[#Michigan|Michigan]]
| data-sort-value=1 {{Party shading/Democratic}} | Democratic (flip)
| 7.5%
|}

Maine was the tipping point state with a margin of 21.6%.

== Alaska ==
{{Main|1958 United States Senate elections in Alaska}}
{{See also|List of United States senators from Alaska}}

Alaska would become a new state January 3, 1959, and it elected two initial senators November 25, 1958, in advance of statehood. The Democratic Party thereby picked up 2 more seats.

In their next elections, Alaska's senators would be elected to 6-year terms.

{{Infobox election
 | election_name      = 1958 class 2 Senate election
 | election_date      = November 25, 1958
 | country            = Alaska
 | type               = presidential
 | ongoing            = no
 | next_election      = 1960 United States Senate election in Alaska
 | next_year          = 1960
 | image_size         = x140px
 | image1             = File:E.L. Bob Bartlett Official Portrait (cropped).jpg
 | nominee1           = '''[[Bob Bartlett]]'''
 | party1             = Democratic Party (US)
 | popular_vote1      = '''40,939'''
 | percentage1        = '''83.83%'''
 | image2             = File:Ralph E. Robertson.jpg
 | nominee2           = [[R. E. Robertson]]
 | party2             = Republican Party (US)
 | popular_vote2      = 7,299
 | percentage2        = 14.95%
|map_image=1958 United States Senate election in Alaska results map by borough (Class II).svg
|map_size=350px
|map_caption=Results by election district<br/>'''Bartlett:''' {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}}
 | title              = U.S. Senator
 | after_election     = [[Bob Bartlett]]
 | after_party        = Democratic Party (US)
}}
The class 2 race, for the 2-year term ending in 1961, was between the Democratic [[Alaska Territory's at-large congressional district|incumbent territorial delegate]] [[Bob Bartlett]], and the Republican Juneau attorney [[R. E. Robertson]].

{{Election box begin no change
 | title      = Alaska regular election (class 2)<ref name=Clerk/><ref>{{Cite web |title=Our Campaigns - AK US Senate Race - Nov 25, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=3268 |access-date=June 12, 2020 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Bob Bartlett]]
 | votes      = 40,939
 | percentage = 83.83
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[R. E. Robertson]]
 | votes      = 7,299
 | percentage = 14.95
}}
{{Election box candidate no change
 | party      = Write-In
 | candidate  = Keith Capper
 | votes      = 599
 | percentage = 1.23
}}
{{Election box majority no change
 | votes      = 33,640
 | percentage = 68.88
}}
{{Election box turnout no change
 | votes      = 48,837
 | percentage =
}}
{{Election box new seat win
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
Bartlett would be re-elected twice and serve until his death in 1968.
{{Clear}}

{{Infobox election
 | election_name      = 1958 class 3 Senate election
 | election_date      = November 25, 1958
 | country            = Alaska
 | type               = presidential
 | ongoing            = no
 | next_election      = 1962 United States Senate election in Alaska
 | next_year          = 1962
 | image_size         = x140px
 | image1             = Senator Ernest Gruening (D-AK) (croppedmore) (cropped).jpg
 | nominee1           = '''[[Ernest Gruening]]'''
 | party1             = Democratic Party (US)
 | popular_vote1      = '''26,045'''
 | percentage1        = '''52.61%'''
 | image2             = File:Mike stepovich offcrop.PNG
 | nominee2           = [[Mike Stepovich]]
 | party2             = Republican Party (US)
 | popular_vote2      = 23,464
 | percentage2        = 47.39%
|map_image=1958 United States Senate election in Alaska results map by borough (Class III).svg
|map_size=350px
|map_caption=Results by election district<br/>'''Gruening:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}<br/>'''Stepovich:''' {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}
 | title              = U.S. Senator
 | after_election     = [[Ernest Gruening]]
 | after_party        = Democratic Party (US)
}}
The class 3 race, for the 4-year term ending in 1963, pitted two former [[Governor of Alaska Territory|territorial governors]], Democrat [[Ernest Gruening]] against Republican [[Mike Stepovich]]. Gruening won a close race.

{{Election box begin no change
 | title      = Alaska regular election (class 3)<ref name=Clerk/><ref>{{Cite web |title=Our Campaigns - AK US Senate Race - Nov 25, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=3275 |access-date=June 12, 2020 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Ernest Gruening]]
 | votes      = 26,045
 | percentage = 52.61
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Mike Stepovich]]
 | votes      = 23,464
 | percentage = 47.39
}}
{{Election box majority no change
 | votes      = 2,581
 | percentage = 5.22
}}
{{Election box turnout no change
 | votes      = 49,509
 | percentage =
}}
{{Election box new seat win
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

Gruening would be [[1962 United States Senate election in Alaska|re-elected in 1962]] and serve until losing renomination in 1968.
{{Clear}}

== Arizona ==
{{Infobox election
| election_name = 1958 United States Senate election in Arizona
| country = Arizona
| type = Presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Arizona
| previous_year = 1952
| next_election = 1964 United States Senate election in Arizona
| next_year = 1964
| election_date = November 4, 1958
| image_size = x160px
| image1 = Senator Goldwater 1960.jpg
| nominee1 = '''[[Barry Goldwater]]'''
| party1 = Republican Party (United States)
| popular_vote1 = '''164,593'''
| percentage1 = '''56.06%'''
| image2 = File:Mcfarland ernest (cropped).jpg
| nominee2 = [[Ernest McFarland]]
| party2 = Democratic Party (United States)
| popular_vote2 = 129,030
| percentage2 = 43.94%
| map_image = 1958 United States Senate election in Arizona results map by county.svg
| map_size = 210px
| map_caption = County results<br />'''Goldwater''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}<br />'''McFarland''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
| title = U.S. Senator
| before_election = [[Barry Goldwater]]
| before_party = Republican Party (US)
| after_election = [[Barry Goldwater]]
| after_party = Republican Party (US)
}}
{{Main|1958 United States Senate election in Arizona}}
{{See also|List of United States senators from Arizona}}
{{Election box begin no change
 | title      = Arizona general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Barry Goldwater]] (Incumbent)
 | votes      = 164,593
 | percentage = 56.06%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Ernest W. McFarland]]
 | votes      = 129,030
 | percentage = 43.94%
}}
{{Election box majority no change
 | votes      = 35,563
 | percentage = 12.12%
}}
{{Election box turnout no change
 | votes      = 293,623
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

{{Clear}}

== California ==
{{Infobox election
| election_name      = 1958 United States Senate election in California
| country            = California
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in California
| previous_year      = 1952
| next_election      = 1964 United States Senate election in California
| next_year          = 1964
| election_date      = November 4, 1958
| image1             = Clair Engle (cropped).jpg
| nominee1           = '''[[Clair Engle]]'''
| party1             = Democratic Party (US)
| popular_vote1      = '''2,927,693'''
| percentage1        = '''57.01%'''
| image2             = Goodwin J. Knight, 31st Governor of California (cropped).jpg
| nominee2           = [[Goodwin Knight]]
| party2             = Republican Party (US)
| popular_vote2      = 2,204,337
| percentage2        = 42.93%
| map_image          = 1958 United States Senate election in California results map by county.svg
| map_size           = 250px
| map_caption        = County results<br/>'''Engle:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} <br/>'''Knight:''' {{legend0|#e27f7f|50–60%}}  
| title              = U.S. Senator
| before_election    = [[William F. Knowland]]
| before_party       = Republican Party (US)
| after_election     = [[Clair Engle]]
| after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in California}}
{{See also|List of United States senators from California}}
{{Election box begin no change
 | title      = California general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Clair Engle]]
 | votes      = 2,927,693
 | percentage = 57.01
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Goodwin Knight]] 
 | votes      = 2,204,337
 | percentage = 42.93
}}
{{Election box candidate no change
 | party      = Write-In
 | candidate  = Jesse M. Ritchie
 | votes      = 892
 | percentage = 0.02
}}
{{Election box candidate no change
 | party      = Write-In
 | candidate  = Ray B. Pollard
 | votes      = 281
 | percentage = 0.01
}}
{{Election box candidate no change
 | party      = None
 | candidate  = Scattering
 | votes      = 2,018
 | percentage = 0.04
}}
{{Election box majority no change
 | votes      = 723,356
 | percentage = 14.08
}}
{{Election box turnout no change
 | votes      = 5,135,221
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}

{{clear}}

== Connecticut ==
{{Infobox election
| election_name      = 1958 United States Senate election in Connecticut
| country            = Connecticut
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Connecticut
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Connecticut
| next_year          = 1964
| election_date      = November 4, 1958
| image1             = [[File:Thomasjdodd.jpg|x155px]]
| nominee1           = '''[[Thomas J. Dodd]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''554,841'''
| percentage1        = '''57.29%'''
| image2             = [[File:William Arthur Purtell.jpg|x155px]]
| nominee2           = [[William A. Purtell]]
| party2             = Republican Party (United States)
| popular_vote2      = 410,622
| percentage2        = 42.40%
| map_image          = {{Switcher |[[File:1958 United States Senate election in Connecticut results map by county.svg|220px]]|County results |[[File:1958 United States Senate election in Connecticut results map by municipality.svg|220px]]|Municipality results}}
| map_size           = 
| map_caption        = '''Dodd''':  {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}<br/>'''Purtell''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}<br/>'''Tie''': {{legend0|#AE8BB1|50%}}
| title              = U.S. Senator
| before_election    = [[William A. Purtell]]
| before_party       = Republican Party (US) 
| after_election     = [[Thomas J. Dodd]]
| after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in Connecticut}}
{{See also|List of United States senators from Connecticut}}

In Connecticut, Democrat [[Thomas J. Dodd]] defeated incumbent senator [[William A. Purtell]] who ran for a second term.

{{Election box begin no change
 | title      = Connecticut general election 1958<ref>{{Cite web |title=Our Campaigns - CT US Senate Race - Nov 04, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=7721 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Thomas J. Dodd]]
 | votes      = 554,841
 | percentage = 57.28
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[William A. Purtell]] (Incumbent)
 | votes      = 410,622
 | percentage = 42.39
}}
{{Election box candidate with party link no change
 | party      = Independent
 | candidate  = [[Vivien Kellems]]
 | votes      = 3,043
 | percentage = 0.31
}}
{{Election box candidate no change
 | party      = None
 | candidate  = Scattering
 | votes      = 119
 | percentage = 0.01
}}
{{Election box majority no change
 | votes      = 144,219
 | percentage = 14.89
}}
{{Election box turnout no change
 | votes      = 968,625
 | percentage =
}}
{{Election box swing with party link
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}

{{clear}}

== Delaware ==
{{Infobox election
| election_name = 1958 United States Senate election in Delaware
| country = Delaware
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Delaware
| previous_year = 1952
| next_election = 1964 United States Senate election in Delaware
| next_year = 1964
| election_date = November 4, 1958

| image1 = [[File:JohnJWilliams.jpg|x145px]]
| nominee1 = '''[[John J. Williams (politician)|John J. Williams]]'''
| party1 = Republican Party (United States)
| popular_vote1 = '''82,280'''
| percentage1 = '''53.28%'''

| image2 = [[File:Elbert N. Carvel 1962.jpg|x145px]]
| nominee2 = [[Elbert Carvel]]
| party2 = Democratic Party (United States)
| popular_vote2 = 72,152
| percentage2 = 46.72%

| map_image = 1964 United States Senate election in Delaware results map by county.svg
| map_size  = 210px
| map_caption = County results <br />
'''Williams:''' {{legend0|#e27f7f|50–60%}}

| title = U.S. Senator
| before_election = [[John J. Williams (politician)|John J. Williams]]
| before_party = Republican Party (United States)
| after_election = [[John J. Williams (politician)|John J. Williams]]
| after_party = Republican Party (United States)
}}
{{Main|1958 United States Senate election in Delaware}}
{{See also|List of United States senators from Delaware}}
Two-term Republican [[John J. Williams (politician)|John J. Williams]] was re-elected to a third term.

{{Election box begin no change
 | title      = Delaware general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[John J. Williams (politician)|John J. Williams]] (Incumbent)
 | votes      = 82,280
 | percentage = 53.28
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Elbert Carvel]]
 | votes      = 72,152
 | percentage = 46.72
}}
{{Election box majority no change
 | votes      = 10,128
 | percentage = 6.56
}}
{{Election box turnout no change
 | votes      = 154,432
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

Williams would be [[1964 United States Senate election in Delaware|re-elected in 1964]], serving four terms until his 1970 retirement.
{{Clear}}

== Florida ==
{{Infobox election
| election_name = 1958 United States Senate election in Florida
| country = Florida
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Florida
| previous_year = 1952
| next_election = 1964 United States Senate election in Florida
| next_year = 1964
| election_date = November 4, 1958
| image_size = x150px
| image1 = Spessard Holland.JPG
| nominee1 = '''[[Spessard Holland]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''386,113'''
| percentage1 = '''71.23%'''
| image2 = 3x4.svg
| nominee2 = Leland Hyzer
| party2 = Republican Party (United States)
| popular_vote2 = 155,956
| percentage2 = 28.77%
| map_image = 1958 United States Senate election in Florida results map by county.svg
| map_size = 280px
| map_caption = County results<br>
'''Holland:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0d056c|>90%}}
| title = U.S. Senator
| before_election = [[Spessard Holland]]
| before_party = Democratic Party (US)
| after_election = [[Spessard Holland]]
| after_party = Democratic Party (US)
| flag_year = 1900
}}
{{Main|1958 United States Senate election in Florida}}
{{See also|List of United States senators from Florida}}

Incumbent Democrat Senator Holland, a conservative, was challenged by former senator Claude Pepper, who had been unseated in 1950. Holland had played a role in recruiting [[George A. Smathers]] to run against the liberal Pepper in that election. The two served as colleagues in the Senate from 1947 to 1951.<ref>{{Cite news |last=Egerton |first=John |date=November 29, 1981 |title=COURTLY CHAMPION OF AMERICA'S ELDERLY |work=The New York Times |url=https://www.nytimes.com/1981/11/29/magazine/courtly-champion-of-america-s-elderly.html |access-date=August 15, 2019}}</ref>

{{Election box begin no change
 | title      =Democratic primary<ref>{{Cite web |title=Our Campaigns - FL US Senate - D Primary Race - Sep 09, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=376761 |access-date=June 11, 2020 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Spessard L. Holland]] (Incumbent)
 | votes      = 408,084
 | percentage = 55.94
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Claude Pepper]]
 | votes      = 321,377
 | percentage = 44.06
}}
{{Election box total no change
 | votes      = 729,461
 | percentage = 100.00
}}
{{Election box end}}

{{Election box begin
 | title      =General election results<ref>{{Cite web |title=Our Campaigns - FL US Senate Race - Nov 04, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=29562 |access-date=June 11, 2020 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Spessard Holland]] (Incumbent)
 | votes      = 386,113
 | percentage = 71.23
 | change     = {{decrease}}28.59
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = Leland Hyzer
 | votes      = 155,956
 | percentage = 28.77
 | change     = {{increase}}28.77
}}
{{Election box majority no change
 | votes      = 230,157
 | percentage = 42.46
}}
{{Election box turnout no change
 | votes      = 542,069
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{clear}}

== Indiana ==
{{Infobox election
| election_name      = 1958 United States Senate election in Indiana
| country            = Indiana
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Indiana
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Indiana
| next_year          = 1964
| election_date      = November 4, 1958

| image1             = [[File:Vance Hartke.jpg|x150px]]
| nominee1           = '''[[Vance Hartke]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''973,636'''
| percentage1        = '''56.46%'''

| image2             = [[File:Harold W. Handley (Indiana Governor) 2.jpg|x150px]]
| nominee2           = [[Harold W. Handley]]
| party2             = Republican Party (United States)
| popular_vote2      = 731,635
| percentage2        = 42.42%

| map_image          = 1958 United States Senate election in Indiana results map by county.svg
| map_size           = 250px
| map_caption        = County results<br/>'''Hartke:''' {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}<br/>'''Handley:''' {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}

| title              = U.S. Senator
| before_election    = [[William E. Jenner]]
| before_party       = Republican Party (United States)
| after_election     = [[Vance Hartke]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Indiana}}
{{See also|List of United States senators from Indiana}}

Incumbent Republican [[William E. Jenner]] did not seek a second full term in office and was replaced by Democrat [[Vance Hartke]], the mayor of [[Evansville, Indiana|Evansville]]. Hartke defeated incumbent Republican Governor of Indiana [[Harold W. Handley]].

Jenner resigned shortly before the election and urged Handley, Jenner's political protégé, to seek his seat. A plan was proposed whereby Handley would resign the governorship, his lieutenant would appoint him senator, and he would finish the term and run as an incumbent. When the plan was revealed to the party leadership, they strongly advised him to not implement it because they feared it would hurt the party and be perceived as a scandal.<ref name="Gugin">{{Cite book |url=https://archive.org/details/isbn_9780871951960 |title=The Governors of Indiana |publisher=Indiana Historical Society Press |year=2006 |isbn=0-87195-196-7 |editor-last=Gugin, Linda C. |location=Indianapolis, Indiana |page=333 |editor2-last=St. Clair, James E |url-access=registration}}</ref>

Handley did not resign from the governorship during his campaign and was widely criticized for the unprecedented action. Hartke accused Handley of raising taxes, breaking of his campaign promise, his reluctance in supporting [[right-to-work law|right-to-work]], and rising state unemployment. Statewide unemployment was just above 10% in April, but dropped to 6.9% by the end of September.<ref name = Gugin/>

{{Election box begin no change
 | title      = Indiana general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Vance Hartke]]
 | votes      = 973,636
 | percentage = 56.47
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Harold W. Handley]]
 | votes      = 731,635
 | percentage = 42.43
}}
{{Election box candidate with party link no change
 | party      = Prohibition Party (US)
 | candidate  = John Stelle
 | votes      = 19,040
 | percentage = 1.10
}}
{{Election box majority no change
 | votes      = 242,001
 | percentage = 14.04
}}
{{Election box turnout no change
 | votes      = 1,724,311
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Maine ==
{{Infobox election
| election_name      = 1958 United States Senate election in Maine
| country            = Maine
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Maine
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Maine
| next_year          = 1964
| election_date      = September 8, 1958
| image_size         = x150px
| image1             = Edmund Muskie.jpg
| nominee1           = '''[[Edmund Muskie]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''172,704'''
| percentage1        = '''60.76%'''
| image2             = Frederick George Payne.jpg
| nominee2           = [[Frederick G. Payne]]
| party2             = Republican Party (US)
| popular_vote2      = 111,522
| percentage2        = 39.24%
| map_image          = 1958 United States Senate election in Maine results map by county.svg
| map_size           = 250px
| map_caption        = County Results <br/>
'''Muskie:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674deff|50–60%}} '''Payne:''' {{legend0|#E27F7F|50–60%}}
| title              = U.S. Senator
| before_election    = [[Frederick G. Payne]]
| before_party       = Republican Party (US)
| after_election     = [[Edmund Muskie]]
| after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in Maine}}
{{See also|List of United States senators from Maine}}
Maine held its election September 8, 1958, in keeping with its routine practice of holding elections before the November national Election Day. Democrat [[Edmund Muskie]] defeated one-term Republican incumbent, [[Frederick G. Payne]] by a wide margin, 61–39%.
{{Election box begin no change
 | title      = Maine general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Edmund Muskie]]
 | votes      = 172,704
 | percentage = 60.76%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Frederick G. Payne]] (Incumbent)
 | votes      = 111,522
 | percentage = 39.24%
}}
{{Election box majority no change
 | votes      = 61,182
 | percentage = 21.52%
}}
{{Election box turnout no change
 | votes      = 284,226
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Maryland ==
{{Infobox election
| election_name      = Maryland election
| country            = Maryland
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Maryland
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Maryland
| next_year          = 1964
| image_size         = 125x136px
| image1             = Jamesglennbeall.jpg
| nominee1           = '''[[J. Glenn Beall]]'''
| party1             = Republican Party (US)
| popular_vote1      = '''384,931'''
| percentage1        = '''51.18%'''
| image2             = Thomas D'Alesandro Jr.jpg
| nominee2           = [[Thomas D'Alesandro Jr.]]
| party2             = Democratic Party (US)
| popular_vote2      = 367,142
| percentage2        = 48.82
| map_image          = 1958 United States Senate election in Maryland results map by county.svg
| map_size           = 275px
| map_caption        = County<br />'''Beall:''' {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}<br />'''D'Alesandro:''' {{legend0|#7996e2|50–60%}}
| title              = U.S. senator
| before_election    = [[J. Glenn Beall]]
| before_party       = Republican Party (US)
| after_election     = [[J. Glenn Beall]]
| after_party        = Republican Party (US)
}}
{{Main|1958 United States Senate election in Maryland}}
{{See also|List of United States senators from Maryland}}
{{Election box begin no change
 | title      = Maryland general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[J. Glenn Beall]] (Incumbent)
 | votes      = 384,931
 | percentage = 51.18%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Thomas D'Alesandro Jr.]]
 | votes      = 367,142
 | percentage = 48.82%
}}
{{Election box majority no change
 | votes      = 17,789
 | percentage = 3.36%
}}
{{Election box turnout no change
 | votes      = 752,073
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{clear}}

== Massachusetts ==
{{Infobox election
| election_name = 1958 United States Senate election in Massachusetts
| country = Massachusetts
| flag_year = 1908
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Massachusetts
| previous_year = 1952
| next_election = 1962 United States Senate special election in Massachusetts
| next_year = 1962 (special)
| election_date = November 4, 1958
| image_size = x150px
| image1 = JFK 1952 portrait.jpg
| nominee1 = '''[[John F. Kennedy]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''1,362,926'''
| percentage1 = '''73.20%'''
| image2 = [[File:VincentCeleste.png| x150px]]
| nominee2 = Vincent Celeste
| party2 = Republican Party (United States)
| popular_vote2 = 488,318
| percentage2 = 26.23%
| map_image = {{switcher
|[[File:1958 United States Senate election in Massachusetts results map by county.svg|250px]]
|County Results 
|[[File:1958 United States Senate Election in Massachusetts by Municipality.svg|250px|]]
|Municipality Results 
|default=1
}}
| map_size = 250px
| map_caption = 
{{col-begin}}
{{col-2}}
'''Kennedy'''
{{legend|#A5B0FF|40–50%}} {{legend|#7996E2|50–60%}} {{legend|#6674DE|60–70%}} {{legend|#584CDE|70–80%}} {{legend|#3933E5|80–90%}} {{legend|#0D0596|90–100%}}
{{col-2}}
'''Celeste'''
{{legend|#FFB2B2|40–50%}} {{legend|#E27F7F|50–60%}} {{legend|#D75D5D|60–70%}} {{legend|#D72F30|70–80%}}
{{col-end}}

| title = U.S. Senator
| before_election = [[John F. Kennedy]]
| before_party = Democratic Party (United States)
| after_election = [[John F. Kennedy]]
| after_party = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Massachusetts}}
{{See also|List of United States senators from Massachusetts}}
{{Election box begin no change
 | title      = Massachusetts general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[John F. Kennedy]] (Incumbent)
 | votes      = 1,362,926
 | percentage = 73.20%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Vincent J. Celeste
 | votes      = 488,318
 | percentage = 26.22%
}}
{{Election box candidate with party link no change
 | party      = Socialist Labor Party of America
 | candidate  = Lawrence Gilfedder
 | votes      = 5,457
 | percentage = 0.29%
}}
{{Election box candidate with party link no change
 | party      = Prohibition Party (US)
 | candidate  = Mark R. Shaw
 | votes      = 5,335
 | percentage = 0.29%
}}
{{Election box candidate no change
 | party      = None
 | candidate  = Scattering
 | votes      = 5
 | percentage = 0.00%
}}
{{Election box majority no change
 | votes      = 874,608
 | percentage = 46.98%
}}
{{Election box turnout no change
 | votes      = 1,862,041
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

{{clear}}

== Michigan ==
{{Infobox election
| election_name      = 1958 United States Senate election in Michigan
| country            = Michigan
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Michigan
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Michigan
| next_year          = 1964
| election_date      = November 4, 1958
| image_size         = x150px
| image1             = Philip Hart 1959.png
| nominee1           = '''[[Philip Hart]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''1,216,966'''
| percentage1        = '''53.57%'''
| image2             = Charles Edward Potter.jpg
| nominee2           = [[Charles E. Potter]]
| party2             = Republican Party (United States)
| popular_vote2      = 1,046,963
| percentage2        = 46.09%
 | map_image          = 1958 United States Senate election in Michigan results map by county.svg
 | map_size           = 250px
 | map_caption        = County results<br/>'''Hart:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}<br/>'''Potter:''' {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}
| title              = U.S. Senator
| before_election    = [[Charles E. Potter]]
| before_party       = Republican Party (United States)
| after_election     = [[Philip Hart]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Michigan}}
{{See also|List of United States senators from Michigan}}
{{Election box begin no change
 | title      = Michigan general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Philip A. Hart]]
 | votes      = 1,216,966
 | percentage = 53.57%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Charles E. Potter]] (Incumbent)
 | votes      = 1,046,963
 | percentage = 46.09%
}}
{{Election box candidate with party link no change
 | party      = Prohibition Party (US)
 | candidate  = Elmer H. Ormiston
 | votes      = 3,518
 | percentage = 0.15%
}}
{{Election box candidate with party link no change
 | party      = Socialist Labor Party of America
 | candidate  = James Sim
 | votes      = 3,128
 | percentage = 0.14%
}}
{{Election box candidate with party link no change
 | party      = Socialist Workers Party (US)
 | candidate  = Evelyn Sell
 | votes      = 1,068
 | percentage = 0.05%
}}
{{Election box candidate no change
 | party      = None
 | candidate  = Scattering
 | votes      = 1
 | percentage = 0.00%
}}
{{Election box majority no change
 | votes      = 170,003
 | percentage = 7.48%
}}
{{Election box turnout no change
 | votes      = 2,271,644
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}

{{Clear}}

== Minnesota ==
{{Infobox election
 | election_name      = 1958 United States Senate election in Minnesota
 | country            = Minnesota
 | flag_year          = 1957
 | type               = presidential
 | ongoing            = no
 | previous_election  = 1952 United States Senate election in Minnesota
 | previous_year      = 1952
 | next_election      = 1964 United States Senate election in Minnesota
 | next_year          = 1964
 | election_date      = November 4, 1958
 | image_size         = 160x180px
 | image1             = File:EugeneMcCarthy (cropped2).jpg
 | nominee1           = '''[[Eugene J. McCarthy]]'''
 | party1             = Democratic–Farmer–Labor Party (Minnesota)
 | popular_vote1      = '''608,847'''
 | percentage1        = '''52.95%'''
 | image2             = EdwardThye.jpg
 | nominee2           = [[Edward John Thye]]
 | party2             = Republican Party (United States)
 | popular_vote2      = 535,629
 | percentage2        = 46.58%
 | map_image          = 1958 United States Senate election in Minnesota results map by county.svg
 | map_size           = 270px
 | map_caption        = County results<br />'''McCarthy:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}<br />'''Thye''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}  
 | title              = U.S. Senator
 | before_election    = [[Edward John Thye]]
 | before_party       = Republican Party (United States)
 | after_election     = [[Eugene J. McCarthy]]
 | after_party        = Democratic–Farmer–Labor Party (Minnesota)
}}
{{Main|1958 United States Senate election in Minnesota}}
{{See also|List of United States senators from Minnesota}}

In Minnesota, Democratic Representative [[Eugene McCarthy]] defeated incumbent senator [[Edward John Thye]] who ran for a third term.

{{Election box begin no change
 | title      = Democratic primary election<ref>{{Cite web |title=Our Campaigns - MN US Senate - D Primary Race - Sep 09, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=735694 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic–Farmer–Labor Party (Minnesota)
 | candidate  = [[Eugene J. McCarthy]]
 | votes      = 279,796
 | percentage = 75.65%
}}
{{Election box candidate with party link no change
 | party      = Democratic–Farmer–Labor Party (Minnesota)
 | candidate  = [[Hjalmar Petersen]]
 | votes      = 76,340
 | percentage = 20.64%
}}
{{Election box candidate with party link no change
 | party      = Democratic–Farmer–Labor Party (Minnesota)
 | candidate  = Hans R. Miller
 | votes      = 13,736
 | percentage = 3.71%
}}
{{Election box total no change
 | votes      = 369,872
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title      =Republican primary election<ref>{{cite web |title=Primary Election Returns on Election held September 9, 1958 |url=https://www.leg.mn.gov/archive/sessions/electionresults/1958-09-09-p-man.pdf |publisher=Minnesota Legislature}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (Minnesota)
 | candidate  = [[Edward John Thye]] (Incumbent)
 | votes      = 224,833
 | percentage = 91.81%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (Minnesota)
 | candidate  = Edward C. Slettedahl
 | votes      = 13,734
 | percentage = 5.61%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (Minnesota)
 | candidate  = Mrs. Peder P. Schmidt
 | votes      = 6,332
 | percentage = 2.58%
}}
{{Election box total no change
 | votes      = 244,899
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title      =General election<ref>{{Cite web |title=Our Campaigns - MN US Senate Race - Nov 03, 1964 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=36846 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic–Farmer–Labor Party (Minnesota)
 | candidate  = [[Eugene J. McCarthy]]
 | votes      = 608,847
 | percentage = 52.95%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (Minnesota)
 | candidate  = [[Edward John Thye]] (Incumbent)
 | votes      = 535,629
 | percentage = 46.58%
}}
{{Election box candidate with party link no change
 | party      = Socialist Workers Party (US)
 | candidate  = William M. Curran
 | votes      = 5,407
 | percentage = 0.47%
}}

{{Election box total no change
 | votes      = 1,149,883
 | percentage = 100.00%
}}
{{Election box majority no change
 | votes      = 73,218
 | percentage = 6.37%
}}
{{Election box gain with party link no change
 | winner     = Democratic–Farmer–Labor Party (Minnesota)
 | loser      = Republican Party (Minnesota)
}}
{{Election box end}}

{{Clear}}

== Mississippi ==
{{Infobox election
| election_name = 1958 United States Senate election in Mississippi
| country = Mississippi
| flag_image = Flag of Mississippi (1894-1996).svg
| type = Presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Mississippi
| previous_year = 1952
| next_election = 1964 United States Senate election in Mississippi
| next_year = 1964
| election_date = November 4, 1958
| image1 = [[File:John Stennis.jpg|x150px]]
| nominee1 = '''[[John C. Stennis]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''61,039'''
| percentage1 = '''100.00%'''
 | map_image = File:Mississippi Dem sweep.svg
 | map_size = 255px
 | map_caption = County results<br/>'''Stennis''': {{legend0|#0d056c|100%}}
| title = U.S. Senator
| before_election = [[John C. Stennis]]
| before_party = Democratic Party (United States)
| after_election = John C. Stennis
| after_party = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Mississippi}}
{{See also|List of United States senators from Mississippi}}
Two-term Democrat [[John C. Stennis]] was re-elected with no opposition.
{{Election box begin no change
 | title      = Mississippi general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[John C. Stennis]] (Incumbent)
 | votes      = 61,039
 | percentage = 100.00%
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

Stennis would be re-elected four more times, serving until his [[1988 United States Senate election in Mississippi|retirement in 1989]].
{{Clear}}

== Missouri ==
{{Infobox election
| election_name = 1958 United States Senate election in Missouri
| country = Missouri
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Missouri
| previous_year = 1952
| next_election = 1964 United States Senate election in Missouri
| next_year = 1964
| election_date = November 4, 1958
| image_size = x150px
| image1 = File:Portrait of W. Stuart Symington 97-1844.jpg
| nominee1 = '''[[Stuart Symington]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''780,083'''
| percentage1 = '''66.45%'''
| image2 = 3x4.svg
| nominee2 = Hazel Palmer
| party2 = Republican Party (United States)
| popular_vote2 = 393,847
| percentage2 = 33.55%
| map_image = 1958 United States Senate election in Missouri results map by county.svg
| map_size = 270px
| map_caption = County results<br>  '''Symington:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#3933e5|80–90%}} {{legend0|#0d056c|>90%}} <br/>'''Palmer:''' {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}
| title = U.S. Senator
| before_election = [[Stuart Symington]]
| before_party = Democratic Party (United States)
| after_election = [[Stuart Symington]]
| after_party = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Missouri}}
{{See also|List of United States senators from Missouri}}

Incumbent Democrat [[Stuart Symington]] was re-elected to a second term. [[Hazel Palmer]] was the first woman ever nominated for United States senator in Missouri.

{{Election box begin no change
 | title= Democratic primary<ref>{{Cite web |title=MO US Senate – D Primary |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=533391 |access-date=August 15, 2019 |website=OurCampaigns}}</ref>}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Stuart Symington]] (incumbent)
 | votes      = 365,470
 | percentage = 92.13% 
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = Lawrence Hastings
 | votes      = 19,954
 | percentage = 5.03%
}} 
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = Lamar Dye
 | votes      = 11,262
 | percentage = 2.84%
}}
{{Election box total no change
 | votes      = 396,686
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title= Republican primary<ref>{{Cite web |title=MO US Senate – R Primary |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=376046 |access-date=August 15, 2019 |website=OurCampaigns}}</ref>}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Hazel Palmer
 | votes      = 61,481
 | percentage = 44.63%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = William McKinley Thomas
 | votes      = 36,438
 | percentage = 26.45%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Homer Cotton
 | votes      = 27,023
 | percentage = 19.62%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Herman G. Grosby
 | votes      = 12,818
 | percentage = 9.31%
}}
{{Election box total no change
 | votes           = 137,760
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin
 | title      = General election<ref name=Clerk/><ref>{{Cite web |title=MO US Senate Race |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=261577 |access-date=August 12, 2019 |website=OurCampaigns}}</ref>
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Stuart Symington]] (Incumbent)
 | votes      = 780,083
 | percentage = 66.45%
 | change     = {{increase}}12.46
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = Hazel Palmer
 | votes      = 393,847
 | percentage = 33.55%
 | change     = {{decrease}}12.39
}}
{{Election box majority
 | votes      = 386,236
 | percentage = 32.90%
 | change     = 
}}
{{Election box turnout
 | votes      = 1,173,930
 | percentage =
 | change     = 
}}
{{Election box hold with party link
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Montana ==
{{Infobox election
 | election_name      = 1958 United States Senate election in Montana
 | country            = Montana
 | flag_year          = 1905
 | type               = presidential
 | previous_election  = 1952 United States Senate election in Montana
 | previous_year      = 1952
 | next_election      = 1964 United States Senate election in Montana
 | next_year          = 1964
 | election_date      = November 4, 1958
 | image_size         = 160px
 | image1             = Michael Joseph Mansfield.jpg
 | nominee1           = '''[[Mike Mansfield]]'''
 | party1             = Democratic Party (US)
 | popular_vote1      = '''174,910'''
 | percentage1        = '''76.22%'''
 | image2             = No image.svg
 | nominee2           = Lou Welch
 | party2             = Republican Party (US)
 | popular_vote2      = 54,573
 | percentage2        = 23.78%
 | map_image          = 1958 United States Senate election in Montana results map by county.svg
 | map_size           = 300px
 | map_caption        = County results<br/>'''Mansfield''':  {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933E5|80-90%}}
 | title              = U.S. Senator
 | before_election    = [[Mike Mansfield]]
 | before_party       = Democratic Party (US)
 | after_election     = [[Mike Mansfield]]
 | after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in Montana}}
{{See also|List of United States senators from Montana}}
Incumbent [[Mike Mansfield]], who was first elected to the Senate in [[1952 United States Senate election in Montana|1952]], ran for re-election. Mansfield won the [[Democratic Party (United States)|Democratic]] primary comfortably, and moved on to the general election, where he was opposed by Lou W. Welch, a millworker and the [[Republican Party (United States)|Republican]] nominee. In contrast to the close campaign in 1952, Mansfield defeated Welch in a landslide and won his second term in the Senate easily.

{{Election box begin no change
 | title      = Democratic primary<ref name="Primary election results">{{Cite web |title=Report of the Official Canvass of the Vote Cast at the Primary Election Held in the State of Montana, June 3, 1958 |url=http://sos.mt.gov/Elections/archives/1950s/1958/1958_Primary_Statewide.pdf |url-status=dead |archive-url=https://web.archive.org/web/20131228155549/http://sos.mt.gov/Elections/Archives/1950s/1958/1958_Primary_Statewide.pdf |archive-date=December 28, 2013 |access-date=July 2, 2014 |publisher=Montana Secretary of State}}</ref>
}}
{{Election box winning candidate with party link no change
 | candidate  = Mike Mansfield (Incumbent)
 | party      = Democratic Party (US)
 | votes      = 97,207
 | percentage = 91.72%
}}
{{Election box candidate with party link no change
 | candidate  = J. M. Nickey
 | party      = Democratic Party (US)
 | votes      = 4,710
 | percentage = 4.44%
}}
{{Election box candidate with party link no change
 | candidate  = Thomas G. Stimatz, former [[Montana House of Representatives|State Representative]]
 | party      = Democratic Party (US)
 | votes      = 4,061
 | percentage = 3.83%
}}
{{Election box total no change
 | votes      = 105,978
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title      = Republican Primary<ref name="Primary election results" />
}}
{{Election box winning candidate with party link no change
 | candidate  = Lou W. Welch, millworker
 | party      = Republican Party (US)
 | votes      = 19,860
 | percentage = 50.30%
}}
{{Election box candidate with party link no change
 | candidate  = Blanche Anderson
 | party      = Republican Party (US)
 | votes      = 19,624
 | percentage = 49.70%
}}
{{Election box total no change
 | votes      = 39,484
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin | title=General election<ref name="House">{{Cite web |title=Statistics of the Presidential and Congressional Election of November 4, 1958 |url=http://clerk.house.gov/member_info/electionInfo/1958election.pdf |access-date=July 4, 2014 |publisher=Clerk of the United States House of Representatives}}</ref>
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Mike Mansfield]] (Incumbent)
 | votes      = 174,910
 | percentage = 76.22%
 | change     = {{increase}}25.47%
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = Lou W. Welch
 | votes      = 54,573
 | percentage = 23.78%
 | change     = {{decrease}}24.77%
}}
{{Election box majority
 | votes      = 120,337
 | percentage = 52.44%
 | change     = {{increase}}50.25%
}}
{{Election box turnout
 | votes      = 229,483
 | percentage =
 | change     =
}}
{{Election box hold with party link
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}

== Nebraska ==
{{Main|1958 United States Senate election in Nebraska}}
{{See also|List of United States senators from Nebraska}}

Republican [[Roman Hruska]] had won a [[1954 United States Senate special elections in Nebraska|1954 special election]] and ran for a full term.  He beat Democratic attorney [[Frank B. Morrison]], who had previously lost his [[1954 United States House of Representatives elections#Nebraska|challenger bid]] for Nebraska's 1st congressional district.{{Infobox election
 | election_name      = 1958 United States Senate election in Nebraska
 | country            = Nebraska
 | flag_year          = 1925
 | type               = presidential
 | ongoing            = no
 | previous_election  = 1954 United States Senate special elections in Nebraska
 | previous_year      = 1954 (special)
 | next_election      = 1964 United States Senate election in Nebraska
 | next_year          = 1964
 | election_date      = November 4, 1958
 | image_size         = x155px
 | image1             = Roman Hruska.png
 | nominee1           = '''[[Roman Hruska]]'''
 | party1             = Republican Party (United States)
 | popular_vote1      = '''232,227'''
 | percentage1        = '''55.64%'''
 | image2             = Gov. Frank Morrison (cropped).jpg
 | nominee2           = [[Frank B. Morrison]]
 | party2             = Democratic Party (United States)
 | popular_vote2      = 185,152
 | percentage2        = 44.36%
 | map_image          = 1958 United States Senate election in Nebraska results map by county.svg
 | map_size           = 300px
| map_caption       = County results<br>'''Hruska''': {{legend0|#e38080 |50–60%}} {{legend0|#d85d5d|60–70%}} {{legend0|#d82b2c|70–80%}}<br/>'''Morrison''': {{legend0|#7a97e3|50–60%}}
 | title              = U.S. Senator
 | before_election    = [[Roman Hruska]]
 | before_party       = Republican Party (United States)
 | after_election     = [[Roman Hruska]]
 | after_party        = Republican Party (United States)
}}{{Election box begin no change|title=Democratic primary<ref name="primary">Official Report of the Board of State Canvassers of the State of Nebraska (primary election). Available at: https://sos.nebraska.gov/elections/previous-elections</ref>}}
{{Election box winning candidate with party link no change|candidate=[[Frank B. Morrison]]|party=Democratic Party (United States)|votes=35,482|percentage=51.85}}
{{Election box candidate with party link no change|candidate=[[Eugene D. O'Sullivan]]|party=Democratic Party (United States)|votes=26,436|percentage=38.63}}
{{Election box candidate with party link no change|candidate=Mike F. Kracher|party=Democratic Party (United States)|votes=6,500|percentage=9.50}}
{{Election box candidate with party link no change|candidate=Scattering|party=Democratic Party (United States)|votes=13|percentage=0.02}}
{{Election box total no change|votes=68,431|percentage=100}}
{{Election box end}}
{{Election box begin no change|title=Republican primary<ref name="primary" />}}
{{Election box winning candidate with party link no change|candidate=[[Roman Hruska]] (Incumbent)|party=Republican Party (United States)|votes=103,348|percentage=99.95}}
{{Election box candidate with party link no change|candidate=Scattering|party=Republican Party (United States)|votes=51|percentage=0.05}}
{{Election box total no change|votes=103,399|percentage=100}}
{{Election box end}}{{Election box begin no change
 | title      = Nebraska general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Roman Hruska]] (Incumbent)
 | votes      = 232,227
 | percentage = 55.64%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Frank B. Morrison]]
 | votes      = 185,152
 | percentage = 44.36%
}}
{{Election box candidate no change|
 |party      = N/A
 |candidate  = Scattering
 |votes      = 6
 |percentage = 0.00%
}}
{{Election box majority no change
 | votes      = 47,075
 | percentage = 11.18%
}}
{{Election box turnout no change
 | votes      = 417,385
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

Hruska would be re-elected two more times and serve until his 1976 retirement.

Morrison would be elected [[Governor of Nebraska]] in 1960 and serve there for six years from 1961 to 1967, and was re-elected twice while running unsuccessfully for U.S. senator.

{{Clear}}

== Nevada ==
{{Infobox election
| election_name      = 1958 United States Senate election in Nevada
| country            = Nevada
| flag_year          = 1929
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Nevada
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Nevada
| next_year          = 1964
| election_date      = November 4, 1958
| image1             = [[File:Howard Cannon.jpg|125px]]
| nominee1           = '''[[Howard Cannon]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''48,732'''
| percentage1        = '''57.65%'''
| image2             = [[File:George malone.jpg|125px]]
| nominee2           = [[George W. Malone]]
| party2             = Republican Party (United States)
| popular_vote2      = 35,760
| percentage2        = 42.32%
| map_image          = 1958 United States Senate election in Nevada results map by county.svg
| map_size           = 230px
| map_caption        = County results<br />'''Cannon''': {{legend0|#7996e2|50–60%}} {{legend0|#584CDE|70–80%}}<br />'''Malone''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}
| title              = U.S. Senator
| before_election    = [[George W. Malone]]
| before_party       = Republican Party (United States)
| after_election     = [[Howard Cannon]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Nevada}}
{{See also|List of United States senators from Nevada}}
In Nevada, incumbent Republican [[George W. Malone]] ran for re-election to a third term, but was defeated by Democrat [[Howard Cannon]].

The campaign was considered{{by whom|date=June 2020}} one of the most competitive and highly watched in the nation in 1958. Senator Malone was known nationally as a leader within the Republican Party's right wing and held key appointments on the Senate Finance and Interior Committees.<ref name="Driggs">{{Cite journal |last=Driggs |first=Don W. |date=March 1959 |title=The 1958 Election in Nevada |journal=The Western Political Quarterly |volume=12 |issue=1 |pages=317–321 |doi=10.2307/444059 |jstor=444059}}</ref>

Malone campaigned on his experience and seniority in the Senate, using the slogan "He Knows Nevada Best." He received support from Eisenhower cabinet secretaries [[Fred Seaton]] and [[Ezra Taft Benson]]. Benson, one of the [[Quorum of the Twelve Apostles (LDS Church)|Twelve Apostles]] of the Church of Jesus Christ of Latter-Day Saints, was especially influential among Nevada's large Mormon population. His endorsement was seen as particularly important in light of Cannon's Mormon faith. Late in the campaign, Malone published full-page ads touting his effort to save Nevada from a federal gambling tax.<ref name="Driggs" />

Cannon focused his attacks on Malone's absentee record in the Senate and his reputation on Capitol Hill as an unpopular extremist.<ref name="Driggs" />

Cannon won the election by a safe margin owing to his overwhelming support in his native Clark County, which contained 47 percent of the state's registered voters. He was the first candidate from southern Nevada elected to the United States Senate.<ref name="Driggs" />

{{Election box begin no change
 | title= Democratic primary<ref>{{Cite web |title=NV US Senate - D Primary |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=36457 |access-date=August 12, 2019 |website=OurCampaigns}}</ref>}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Howard Cannon]]
 | votes      = 22,787
 | percentage = 51.66%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = Fred Anderson
 | votes      = 21,319
 | percentage = 48.34%
}}
{{Election box total no change
 | votes      = 44,106
}}
{{Election box end}}

Senator Malone was unopposed for re-nomination by the Republican Party.

{{Election box begin | title=General election<ref name="House" />
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Howard Cannon]], City Attorney of [[Las Vegas, Nevada|Las Vegas]]
 | votes      = 48,732
 | percentage = 57.65%
 | change     = {{increase}}7.63%
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[George W. Malone]] (Incumbent)
 | votes      = 35,760
 | percentage = 42.32%
 | change     = {{decrease}}9.35%
}}
{{Election box majority
 | votes      = 12,972
 | percentage = 15.35%
 | change     = {{increase}}12.00%
}}
{{Election box turnout
 | votes      = 84,492
 | percentage =
 | change     =
}}
{{Election box gain with party link
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}

== New Jersey ==
{{Infobox election
 | election_name      = New Jersey election
 | country            = New Jersey
 | flag_year          = 1896
 | type               = presidential
 | ongoing            = no
 | previous_election  = 1952 United States Senate election in New Jersey
 | previous_year      = 1952
 | next_election      = 1964 United States Senate election in New Jersey
 | next_year          = 1964
 | image_size         = 125x136px
 | image1             = Harrison Williams(D-NJ).jpg
 | nominee1           = '''[[Harrison A. Williams|Harrison Williams]]'''
 | party1             = Democratic Party (US)
 | popular_vote1      = '''966,832'''
 | percentage1        = '''51.39%'''
 | image2             = KEANROBERTWIN.jpg
 | nominee2           = [[Robert Kean]]
 | party2             = Republican Party (US)
 | popular_vote2      = 882,287
 | percentage2        = 46.90%
 | map_image          = 1958 United States Senate election in New Jersey results map by county.svg
 | map_size           = 250px
 | map_caption        = County results<br />'''Williams''': {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}<br />'''Kean''': {{legend0|#ffb2b2|40-50%}} {{legend0|#e27f7f|50-60%}} {{legend0|#d75d5d|60-70%}}
 | title              = U.S. senator
 | before_election    = [[H. Alexander Smith]]
 | before_party       = Republican Party (US)
 | after_election     = [[Harrison A. Williams|Harrison Williams]]
 | after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in New Jersey}}
{{See also|List of United States senators from New Jersey}}

Incumbent Republican [[H. Alexander Smith]] chose not to seek a third term in office. Democratic U.S. Representative [[Harrison A. Williams|Harrison Williams]] won the open seat over U.S. Representative [[Robert Kean]].

{{Election box begin no change
 | title      = Democratic primary<ref>{{Cite web |title=NJ US Senate - D Primary |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=743882 |access-date=August 12, 2019 |website=OurCampaigns}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Harrison A. Williams]]
 | votes      = 152,413
 | percentage = 43.12%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = John Grogan
 | votes      = 139,605
 | percentage = 39.49%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = Joseph E. McLean
 | votes      = 61,478
 | percentage = 17.39%
}}
{{Election box total no change
 | votes      = 353,496
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title      = Republican primary<ref>{{Cite web |title=NJ US Senate - R Primary |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=743883 |access-date=August 12, 2019 |website=OurCampaigns}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Robert Kean]]
 | votes      = 152,884
 | percentage = 43.00%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Bernard M. Shanley]]
 | votes      = 128,990
 | percentage = 36.28%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Robert J. Morris]]
 | votes      = 73,658
 | percentage = 20.72%
}}
{{Election box total no change
 | votes      = 355,532
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin
 | title      =General election<ref>{{Cite web |title=NJ US Senate Race |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=82951 |access-date=August 12, 2019 |website=OurCampaigns}}</ref>
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Harrison A. Williams]]
 | votes      = 966,832
 | percentage = 51.39%
 | change     = {{increase}}7.77
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[Robert Kean]]
 | votes      = 882,287
 | percentage = 46.90%
 | change     = {{decrease}}8.61
}}
{{Election box candidate with party link
 | party      = Socialist Workers Party (US)
 | candidate  = Daniel Roberts
 | votes      = 11,669
 | percentage = 0.62%
 | change     = {{increase}}0.40
}}
{{Election box candidate minor party
 | party      = Politicians Are Jokers
 | candidate  = [[Henry Krajewski]]
 | votes      = 6,013
 | percentage = 0.32%
 | change     = N/A
}}
{{Election box candidate with party link
 | party      = Independent
 | candidate  = John J. Winberry
 | votes      = 5,481
 | percentage = 0.29%
 | change     = N/A
}}
{{Election box candidate with party link
 | party      = Conservative Party (US)
 | candidate  = Winifred O. Perry
 | votes      = 3,062
 | percentage = 0.16%
 | change     = N/A
}}
{{Election box candidate minor party
 | party      = People's Choice
 | candidate  = John M. D'Addetta
 | votes      = 3,024
 | percentage = 0.16%
 | change     = N/A
}}
{{Election box candidate with party link
 | party      = Socialist Labor Party
 | candidate  = Albert Ronis
 | votes      = 2,935
 | percentage = 0.16%
 | change     = {{increase}}0.09
}}
{{Election box total no change
 | votes      = 1,881,303
 | percentage = 100.00%
}}
{{Election box gain no swing
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
}}
{{Election box end}}

== New Mexico ==
{{Infobox election
| election_name      = 1958 United States Senate election in New Mexico
| country            = New Mexico
| flag_year          = 
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in New Mexico
| previous_year      = 1952
| next_election      = 1964 United States Senate election in New Mexico
| next_year          = 1964
| election_date      = November 4, 1958
| image_size         = x150px
| image1             = File:Dennischavezportrait.jpg
| nominee1           = '''[[Dennis Chávez]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''127,496'''
| percentage1        = '''62.71%'''
| image2             = [[File:No image.svg|x120px]]
| nominee2           = [[Forrest S. Atchley]]
| party2             = Republican Party (United States)
| popular_vote2      = 75,827
| percentage2        = 37.29%
| map_image          = 1958 United States Senate election in New Mexico results map by county.svg
| map_size           = 200px
| map_caption        = County results<br/>'''Chávez''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} 
| title              = U.S. Senator
| before_election    = [[Dennis Chávez]]
| before_party       = Democratic Party (United States)
| after_election     = [[Dennis Chávez]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in New Mexico}}
{{See also|List of United States senators from New Mexico}}
{{Election box begin no change
 | title      = New Mexico general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Dennis Chavez]] (Incumbent)
 | votes      = 127,496
 | percentage = 62.71%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Forrest S. Atchley
 | votes      = 75,827
 | percentage = 37.29%
}}
{{Election box majority no change
 | votes      = 51,669
 | percentage = 25.42%
}}
{{Election box turnout no change
 | votes      = 203,323
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== New York ==
{{Infobox election
| election_name      = 1958 United States Senate election in New York
| country            = New York
| flag_image         = Flag of New York (1909–2020).svg
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in New York
| previous_year      = 1952
| next_election      = 1964 United States Senate election in New York
| next_year          = 1964
| election_date      = November 4, 1958
| image_size         = x160px

| image1             = 	File:Senator Kenneth Keating (cropped).jpg
| nominee1           = '''[[Kenneth Keating]]'''
| party1             = Republican Party (US)
| popular_vote1      = '''2,842,942'''
| percentage1        = '''50.75%'''

| image2             = File:Frank S. Hogan, district attorney of New York County. 1960.jpg
| nominee2           = [[Frank Hogan]]
| party2             = Democratic Party (United States)
| alliance2          = Liberal Party of New York
| popular_vote2      = 2,709,950
| percentage2        = 48.38%

| map_image = 1958 United States Senate election in New York results map by county.svg
| map_size = 300px
| map_caption = County results<br/>'''Keating:''' {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}<br/>'''Hogan:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}

| title              = Senator
| before_election    = [[Irving Ives]]
| before_party       = Republican Party (United States)
| after_election     = [[Kenneth Keating]]
| after_party        = Republican Party (United States)
}}
{{Main|1958 United States Senate election in New York}}
{{See also|List of United States senators from New York}}
Incumbent Republican [[Irving Ives]] retired. Republican Representative [[Kenneth Keating]] defeated Democrat [[Frank Hogan]] to succeed Ives.

{{Election box begin no change| title=1958 Democratic Convention<ref>{{Cite web |title=NY US Senate - D Convention |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=165393 |access-date=March 12, 2020 |publisher=Our Campaigns}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Frank Hogan]]
 | votes      = 772
 | percentage = 67.60%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = Thomas E. Murray Sr.
 | votes      = 304
 | percentage = 26.62%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Thomas K. Finletter]]
 | votes      = 66
 | percentage = 5.78%
}}
{{Election box total no change
 | votes      = 1,317
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title      = General election<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Kenneth Keating]]
 | votes      = 2,842,942
 | percentage = 50.75%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Frank Hogan]]
 | votes      = 2,709,950
 | percentage = 48.37%
}}
{{Election box candidate no change
 | party      = Independent Socialist
 | candidate  = [[Corliss Lamont]]
 | votes      = 49,087
 | percentage = 0.88%
}}
{{Election box candidate no change
 | party      = None
 | candidate  = Scattering
 | votes      = 95
 | percentage = 0.00%
}}
{{Election box majority no change
 | votes      = 132,992
 | percentage = 2.38%
}}
{{Election box turnout no change
 | votes      = 5,601,979
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== North Carolina (special) ==
{{Infobox election
| election_name      = 1958 United States Senate special election in North Carolina
| country            = North Carolina
| type               = presidential
| ongoing            = no
| previous_election  = 1954 United States Senate election in North Carolina
| previous_year      = 1954
| next_election      = 1960 United States Senate election in North Carolina
| next_year          = 1960
| election_date      = November 4, 1958
| image_size         = x150px

| image1             = File:B. Everett Jordan.jpg
| nominee1           = '''[[B. Everett Jordan]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''431,492'''
| percentage1        = '''69.99%'''

| image2             = No image.svg
| nominee2           = [[Richard C. Clarke Jr.]]
| party2             = Republican Party (United States)
| popular_vote2      = 184,977
| percentage2        = 30.01%

| map_image         = 1958 United States Senate special election in North Carolina results map by county.svg
| map_size          = 325px
| map_caption       = County results<br/>'''Jordan''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0d056c|>90%}}<br/>'''Clarke''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}

 | title              = U.S. Senator
 | before_election    = [[B. Everett Jordan]]
 | before_party       = Democratic Party (US)
 | after_election     = [[B. Everett Jordan]]
 | after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate special election in North Carolina}}
{{See also|List of United States senators from North Carolina}}
{{Expand section|date=June 2020}}

Democrat [[W. Kerr Scott]] had died April 16, 1958, and former Democratic [[Governor of North Carolina]] [[B. Everett Jordan]] was appointed April 19, 1958, to continue the term, pending a special election.  Jordan was then re-elected in November.

{{Election box begin no change
 | title      = General election<ref>{{Cite web |title=Our Campaigns - NC US Senate - Special Election Race - Nov 04, 1958 |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=210038 |access-date=June 12, 2020 |website=www.ourcampaigns.com}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[B. Everett Jordan]] (incumbent)
 | votes      = 431,492
 | percentage = 70.0%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Richard C. Clarke Jr.]]
 | votes      = 184,977
 | percentage = 30.0%
}}
{{Election box turnout no change
 | votes      = 
 | percentage = 15.18%
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

Jordan would later be twice re-elected and serve until 1973.
{{Clear}}

== North Dakota ==
{{Infobox Election
| election_name = 1958 United States Senate election in North Dakota
| country = North Dakota
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in North Dakota
| previous_year = 1952
| next_election = 1960 United States Senate special election in North Dakota
| next_year = 1960
(special)
| election_date = November 4, 1958
| image_size = 125x136px
| image1 = William Langer.jpg
| nominee1 = '''[[William Langer]]'''
| party1 = Republican Party (United States)
| popular_vote1 = '''117,070'''
| percentage1 = '''57.21%'''
| image2 = No image.svg
| nominee2 = Raymond Vendsel
| party2 = North Dakota Democratic-NPL Party
| popular_vote2 = 84,892
| percentage2 = 41.49%
| map_image = 1958 United States Senate election in North Dakota results map by county.svg
| map_size = 280px
| map_caption = County results<br>'''Langer:'''  {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}<br/>'''Vendsel:''' {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
| title = U.S. Senator
| before_election = [[William Langer]]
| before_party = Republican Party (United States)
| after_election = [[William Langer]]
| after_party = Republican Party (United States)
}}
{{Main|1958 United States Senate election in North Dakota}}
{{See also|List of United States senators from North Dakota}}
Incumbent [[North Dakota Republican Party|Republican]], and former [[Non-Partisan League]] (NPL) senator, [[William Langer]], was re-elected to a fourth term, defeating [[North Dakota Democratic NPL Party]] (Dem-NPL) candidate [[Raymond G. Vendsel]].<ref name="House" />

Only Langer filed as a Republican, and the endorsed Democratic-NPL candidate was [[Raymond G. Vendsel]]. Langer and Vendsel won the primary elections for their respective parties.

Two independent candidates, [[Arthur C. Townley]] and [[Custer Solem]], also filed before the deadline but had minimal impact on the outcome of the election, totaling less than 3,000 votes combined. Townley was known as the creator of the National [[Non-Partisan League]], and had previously sought [[1956 United States Senate election in North Dakota|North Dakota's other senate seat in 1956]].

{{Election box begin no change | title=North Dakota election
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[William Langer]] (Incumbent)
 | votes      = 117,070
 | percentage = 57.21%
}}
{{Election box candidate with party link no change
 | party      = North Dakota Democratic-NPL Party
 | candidate  = Raymond G. Vendsel
 | votes      = 84,892
 | percentage = 41.49%
}}
{{Election box candidate with party link no change
 | party      = Independent
 | candidate  = [[Arthur C. Townley]]
 | votes      = 1,700
 | percentage = 0.83%
}}
{{Election box candidate with party link no change
 | party      = Independent
 | candidate  = Custer Solem
 | votes      = 973
 | percentage = 0.48%
}}
{{Election box majority no change
 | votes      = 32,178
 | percentage = 15.72%
}}
{{Election box turnout no change
 | votes      = 204,635
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{End}}
Langer would die in office less than a year into what became his final term. A special election was held in 1960 triggered by Langer's death.

{{Clear}}

== Ohio ==
{{Infobox election
| election_name      = 1958 United States Senate election in Ohio
| country            = Ohio
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Ohio
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Ohio
| next_year          = 1964
| election_date      = November 4, 1958
| image_size         = x150px

| image1             = File:Stephen M. Young 87th Congress 1961.jpg 
| nominee1           = '''[[Stephen M. Young]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''1,652,211'''
| percentage1        = '''52.46%'''

| image2             = File:John W. Bricker 84th Congress 1955.jpg
| nominee2           = [[John W. Bricker]]
| party2             = Republican Party (United States)
| popular_vote2      = 1,497,199
| percentage2        = 47.54%

| map_image         = 1958 United States Senate election in Ohio results map by county.svg
| map_size          = 200px
| map_caption       = County results<br/>'''Young''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} <br/>'''Bricker''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}

| title              = U.S. Senator
| before_election    = [[John W. Bricker]]
| before_party       = Republican Party (United States)
| after_election     = [[Stephen M. Young]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Ohio}}
{{See also|List of United States senators from Ohio}}
Incumbent Republican [[John W. Bricker]] was defeated in his bid for a third term by U.S. Representative [[Stephen M. Young]].

{{Election box begin
 | title      =General election<ref>{{Cite web |title=OH US Senate |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=27788 |access-date=August 12, 2019 |website=OurCampaigns}}</ref>
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Stephen M. Young]]
 | votes      = 1,652,211
 | percentage = 52.46%
 | change     = {{increase}}7.04
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[John W. Bricker]] (Incumbent)
 | votes      = 1,497,199
 | percentage = 47.54%
 | change     = {{decrease}}7.05
}}
{{Election box majority no change
 | votes      = 155,012
 | percentage = 4.92%
}}
{{Election box turnout no change
 | votes      = 3,149,410
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}

{{Clear}}

== Pennsylvania ==
{{Infobox election
| election_name = 1958 United States Senate election in Pennsylvania
| country = Pennsylvania
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Pennsylvania
| previous_year = 1952
| next_election = 1964 United States Senate election in Pennsylvania
| next_year = 1964
| election_date = November 4, 1958
| image1 = [[Image:Hugh Scott.jpg|x150px]]
| nominee1 = '''[[Hugh Scott]]'''
| party1 = Republican Party (United States)
| popular_vote1 = '''2,042,586'''
| percentage1 = '''51.21%'''
| image2 = [[File:George M. Leader (Pennsylvania governor) (cropped).jpg|x150px]]<!-- [[WP:NFCC]] violation: [[Image:Governorgeorgeleader.jpg|x150px]] -->
| nominee2 = [[George M. Leader]]
| party2 = Democratic Party (United States)
| popular_vote2 = 1,929,821
| percentage2 = 48.38%
| map_image = 1958 United States Senate election in Pennsylvania results map by county.svg
| map_size = 250px
| map_caption = County results <br/>
'''Scott:''' {{legend0|#ffb2b2|40-50%}} {{legend0|#e27f7f|50-60%}} {{legend0|#d75d5d|60-70%}} {{legend0|#d72f30|70–80%}}
'''Leader:''' {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}}
| title = U.S. Senator
| before_election = [[Edward Martin (Pennsylvania politician)|Edward Martin]]
| before_party = Republican Party (United States)
| after_election = [[Hugh Scott]]
| after_party = Republican Party (United States)
}}
{{Main|1958 United States Senate election in Pennsylvania}}
{{See also|List of United States senators from Pennsylvania}}
Incumbent Republican [[Edward Martin (Pennsylvania politician)|Edward Martin]] did not seek re-election. The Republican nominee, [[Hugh Scott]], defeated the term-limited Democratic [[Governor of Pennsylvania]] [[George M. Leader]] for the vacant seat.

{{Election box begin | title=General election<ref name="House" />
}}
{{Election box winning candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[Hugh Scott]]
 | votes      = 2,042,586
 | percentage = 51.21%
 | change     = {{decrease}}0.37%
}}
{{Election box candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[George M. Leader]]
 | votes      = 1,929,821
 | percentage = 48.38%
 | change     = {{increase}}0.40%
}}
{{Election box candidate with party link
 | party      = Socialist Labor Party of America
 | candidate  = [[George S. Taylor]]
 | votes      = 10,431
 | percentage = 0.26%
 | change     = {{increase}}0.26%
}}
{{Election box candidate with party link
 | party      = Socialist Workers Party (US)
 | candidate  = Ethel Peterson
 | votes      = 5,742
 | percentage = 0.14%
 | change     = {{increase}}0.14%
}}
{{Election box candidate
 | party      = N/A
 | candidate  = Other
 | votes      = 42
 | percentage = 0.00%
 | change     = N/A
}}
{{Election box majority
 | votes      = 112,765
 | percentage = 2.83%
 | change     =
}}
{{Election box turnout
 | votes      = 3,988,622
 | percentage =
 | change     =
}}
{{Election box hold with party link
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
 | change     =
}}
{{Election box end}}

Scott would be twice re-elected, rising to the Senate Minority leader, and serve until retiring in 1977.  Leader retired from public service after the defeat.
{{Clear}}

== Rhode Island ==
{{Infobox election
| election_name      = 1958 United States Senate election in Rhode Island
| country            = Rhode Island
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Rhode Island
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Rhode Island
| next_year          = 1964
| election_date      = November 4, 1958
| image1             = [[File: John Pastore in 1961.jpg|x145px]]
| nominee1           = '''[[John Pastore]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''222,166'''
| percentage1        = '''64.49%'''
| image2             = [[File:No image.svg|x120px]]
| nominee2           = Bayard Ewing
| party2             = Republican Party (United States)
| popular_vote2      = 122,353
| percentage2        = 35.51%
| map_image          = 1958 United States Senate election in Rhode Island results map by county.svg
| map_size           = 230px
| map_caption        = County results<br/>'''Pell''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
| title              = U.S. Senator
| before_election    = [[John Pastore]]
| before_party       = Democratic Party (United States)
| after_election     = [[John Pastore]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Rhode Island}}
{{See also|List of United States senators from Rhode Island}}
Two-term incumbent Democrat [[John Pastore]] was easily re-elected over Republican attorney [[Bayard Ewing]],<ref>{{Cite news |last=Lambert |first=Bruce |date=November 1, 1991 |title=Bayard Ewing, 75, Ex-U.S. Chairman Of the United Way |language=en-US |work=The New York Times |url=https://www.nytimes.com/1991/11/01/us/bayard-ewing-75-ex-us-chairman-of-the-united-way.html |access-date=June 12, 2020 |issn=0362-4331}}</ref> a repeat of their [[1952 United States Senate election in Rhode Island|1952 race]].

{{Election box begin no change
 | title      = Rhode Island general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[John Pastore]] (Incumbent)
 | votes      = 222,166
 | percentage = 64.49%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Bayard Ewing]]
 | votes      = 122,353
 | percentage = 35.51%
}}
{{Election box majority no change
 | votes      = 99,813
 | percentage = 28.98%
}}
{{Election box turnout no change
 | votes      = 344,519
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

Ewing would later serve as the national chairman of the [[United Way]] (1969–1972) and the [[Rhode Island School of Design]] (1967–1985).
{{Clear}}

== Tennessee ==
{{Infobox election
| election_name = 1958 United States Senate election in Tennessee
| country = Tennessee
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Tennessee
| previous_year = 1952
| next_election = 1964 United States Senate election in Tennessee
| next_year = 1964
| election_date = November 4, 1958
| image1 = [[File:Al Gore 1959.jpg|x150px]]
| nominee1 = '''[[Albert Gore Sr.]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''317,324'''
| percentage1 = '''79.00%'''
| image2 = [[File:No image.svg|x120px]]
| nominee2 = Hobart F. Atkins
| party2 = Republican Party (United States)
| popular_vote2 = 76,371
| percentage2 = 19.01%
| map_image = 1958 United States Senate election in Tennessee results map by county.svg
| map_size = 300px
| map_caption = County results<br/>'''Gore:''' {{legend0|#A5B0FF|40–50%}} 
 {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0D0596|>90%}}<br/>'''Atkins:''' {{legend0|#e27f7f|50–60%}} 
| title = U.S. senator
| before_election = [[Albert Gore Sr.]]
| before_party = Democratic Party (US)
| after_election = [[Albert Gore Sr.]]
| after_party = Democratic Party (US)
}}
{{Main|1958 United States Senate election in Tennessee}}
{{See also|List of United States senators from Tennessee}}
{{Election box begin no change
 | title      = Tennessee general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Albert Gore Sr.]] (Incumbent)
 | votes      = 317,324
 | percentage = 79.00%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Hobart F. Atkins
 | votes      = 76,371
 | percentage = 19.01%
}}
{{Election box candidate no change
 | party      = Write-In
 | candidate  = Chester W. Mason
 | votes      = 5,324
 | percentage = 1.33%
}}
{{Election box candidate no change
 | party      = Write-In
 | candidate  = Thomas Gouge Jr.
 | votes      = 2,646
 | percentage = 0.66%
}}
{{Election box majority no change
 | votes      = 240,953
 | percentage = 59.99%
}}
{{Election box turnout no change
 | votes      = 401,665
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Texas ==
{{Infobox election
| election_name = 1958 United States Senate election in Texas
| country = Texas
| type = presidential
| ongoing = no
| previous_election = 1957 United States Senate special election in Texas
| previous_year = 1957 (special)
| next_election = 1964 United States Senate election in Texas
| next_year = 1964
| election_date = November 4, 1958
| image1 = [[File:RalphYarborough.jpg|x150px]]
| nominee1 = '''[[Ralph Yarborough]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''587,030'''
| percentage1 = '''74.58%'''
| image2 = [[File:3x4.svg|x150px]]
| nominee2 = Roy Whittenburg
| party2 = Republican Party (United States)
| popular_vote2 = 185,926
| percentage2 = 23.62%
| title = U.S. Senator
| before_election = [[Ralph Yarborough]]
| before_party = Democratic Party (United States)
| after_election = [[Ralph Yarborough]]
| after_party = Democratic Party (United States)
| map_image = 1958 United States Senate election in Texas results map by county.svg
| map_caption = County Results<ref>Election Returns: November 4, 1958, Texas Secretary of State election registers. Archives and Information Services Division, Texas State Library and Archives Commission. pp. 481–486</ref><br/>
'''Yarborough''': {{legend0|#7996E2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0d056c|>90%}}<br/>'''Whittenburg''': {{legend0|#e27f7f|50–60%}}<br/>'''Tie''': {{legend0|#AE8BB1|50%}}
}}
{{Main|1958 United States Senate election in Texas}}
{{See also|List of United States senators from Texas}}
{{Election box begin no change
 | title      = Texas general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Ralph Yarborough]] (Incumbent)
 | votes      = 587,030
 | percentage = 74.58%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = Roy Whittenburg
 | votes      = 185,926
 | percentage = 23.62%
}}
{{Election box candidate no change
 | party      = Write-In
 | candidate  = Bard W. Logan
 | votes      = 14,172
 | percentage = 1.80%
}}
{{Election box majority no change
 | votes      = 401,104
 | percentage = 50.96%
}}
{{Election box turnout no change
 | votes      = 787,128
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Utah ==
{{Infobox election
| election_name      = 1958 United States Senate election in Utah
| country            = Utah
| flag_year          = 1922
| type               = presidential
| ongoing            = no
| previous_election  = 1952 United States Senate election in Utah
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Utah
| next_year          = 1964
| election_date      = November 4, 1958

| image1             = File:Senator Frank Moss.jpg
| nominee1           = '''[[Frank Moss]]'''
| party1             = Democratic Party (United States)
| popular_vote1      = '''112,827'''
| percentage1        = '''38.73%'''

| image2             = Arthur V. Watkins, 1950.jpg
| nominee2           = [[Arthur V. Watkins]]
| party2             = Republican Party (United States)
| popular_vote2      = 101,471
| percentage2        = 34.83%

| image3             = File:J. Bracken Lee (cropped).jpg
| nominee3           = [[J. Bracken Lee]]
| party3             = Independent (United States)
| popular_vote3      = 77,013
| percentage3        = 26.44%

| map_image          = 1958 United States Senate election in Utah results map by county.svg
| map_size           = 220px
| map_caption        = County results<br/>'''Moss:''' {{legend0|#bdd3ff|30–40%}} {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}}<br/>'''Watkins:''' {{legend0|#ffc8cd|30–40%}} {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}}<br/>'''Lee:''' {{legend0|#d3d3d3|40–50%}} {{legend0|#7e7e7e|60–70%}}
| title              = U.S. Senator
| before_election    = [[Arthur V. Watkins]]
| before_party       = Republican Party (United States)
| after_election     = [[Frank Moss (politician)|Frank Moss]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Utah}}
{{See also|List of United States senators from Utah}}
{{Election box begin no change
 | title      = Utah general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Frank Moss (politician)|Frank Moss]]
 | votes      = 112,827
 | percentage = 38.73%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Arthur V. Watkins]] (Incumbent)
 | votes      = 101,471
 | percentage = 34.83%
}}
{{Election box candidate with party link no change
 | party      = Independent
 | candidate  = [[J. Bracken Lee]]
 | votes      = 77,013
 | percentage = 26.44%
}}
{{Election box majority no change
 | votes      = 11,356
 | percentage = 3.90%
}}
{{Election box turnout no change
 | votes      = 291,311
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Vermont ==
{{Infobox election
| election_name = 1958 United States Senate election in Vermont
| country = Vermont
| type = presidential
| election_date = {{Start date|1958|11|4}}
| ongoing = no
| previous_election = 1952 United States Senate election in Vermont
| previous_year = 1952
| next_election = 1964 United States Senate election in Vermont
| next_year = 1964
| image1 = [[File:WinstonProuty (cropped).jpg|150x150px]]
| nominee1 = '''[[Winston L. Prouty]]'''
| party1 = Republican Party (United States)
| popular_vote1 = '''64,900'''
| percentage1 = '''52.15%'''
| image2 = [[File:FredFayette.png|150x150px]]
| party2 = Democratic Party (United States)
| nominee2 = Frederick Fayette
| popular_vote2 = 59,536
| percentage2 = 47.84%
| map_image = 1958 United States Senate election in Vermont results map by county.svg
| map_size = 220px
| map_caption = County results<br/>'''Prouty:''' {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}<br>
'''Fayette:''' {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
| title = U.S. Senator
| before_election = [[Ralph Flanders]]
| before_party = Republican Party (United States)
| after_election = [[Winston L. Prouty]]
| after_party = Republican Party (United States)
}}
{{Main|1958 United States Senate election in Vermont}}
{{See also|List of United States senators from Vermont}}
Incumbent Republican [[Ralph Flanders]] did not run for re-election to another term in the [[United States Senate]]. Republican candidate [[Winston L. Prouty]] defeated Democratic candidate [[Frederick J. Fayette]] to succeed him.

{{Election box begin
 | title      = Republican primary<ref name=VTprimary/>
}}
{{Election box winning candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[Winston L. Prouty]]
 | votes      = 31,866
 | percentage = 64.6%
 | change     =
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[Lee E. Emerson]]
 | votes      = 17,468
 | percentage = 35.4%
 | change     =
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = ''Other''
 | votes      = 4
 | percentage = 0.0%
 | change     =
}}
{{Election box total
 | votes      = 49,338
 | percentage = 100.00%
 | change     =
}}
{{Election box end}}

{{Election box begin no change
 | title      = Democratic primary<ref name="VTprimary">{{Cite web |title=Primary Election Results |url=https://www.sec.state.vt.us/media/62968/p1958.pdf |access-date=June 16, 2015 |publisher=Office of the Vermont Secretary of State}}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Frederick J. Fayette]]
 | votes      = 6,546
 | percentage = 99.5%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = ''Other''
 | votes      = 32
 | percentage = 0.5%
}}
{{Election box total no change
 | votes      = 6,578
 | percentage = 100.00%
}}
{{Election box end}}

{{Election box begin no change
 | title      = General election<ref name="VT">{{Cite web |title=General Election Results - U.S. senator - 1914-2014 |url=https://www.sec.state.vt.us/media/682280/generalelection_USSenator.pdf |access-date=June 16, 2015 |publisher=Office of the Vermont Secretary of State |archive-date=March 4, 2016 |archive-url=https://web.archive.org/web/20160304053355/https://www.sec.state.vt.us/media/682280/generalelection_USSenator.pdf |url-status=dead }}</ref>
}}
{{Election box winning candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Winston L. Prouty]]
 | votes      = 64,900
 | percentage = 52.15%
}}
{{Election box candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Frederick J. Fayette]]
 | votes      = 59,536
 | percentage = 47.84%
}}
{{Election box candidate no change
 | party      = N/A
 | candidate  = ''Other''
 | votes      = 6
 | percentage = 0.00%
}}
{{Election box majority no change
 | votes      = 5,364
 | percentage = 4.31%
}}
{{Election box total no change
 | votes      = 124,442
 | percentage = 100.00%
}}
{{Election box hold with party link no change
 | winner     = Republican Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Virginia ==
{{Infobox election
| election_name      = Virginia election
| country            = Virginia
| type               = presidential
| ongoing            = 
| previous_election  = 1952 United States Senate election in Virginia
| previous_year      = 1952
| next_election      = 1964 United States Senate election in Virginia
| next_year          = 1964
| turnout            = 
| image_size         = 125x136px
| image1             = Harry F. Byrd.jpg
| nominee1           = '''[[Harry F. Byrd]]'''
| party1             = Democratic Party (US)
| popular_vote1      = '''317,221'''
| percentage1        = '''69.3%'''
| image2             = No image.svg
| nominee2           = [[Louise Wensel]]
| party2             = Independent
| popular_vote2      = 120,224
| percentage2        = 26.3%
| map_image          = 1958 United States Senate election in Virginia results map by county.svg 
| map_size           = 300px 
| map_caption        = County and Independent City Results<br />
'''Byrd:''' {{legend0|#a5b0ff|40-50%}} {{legend0|#7996e2|50-60%}} {{legend0|#6674de|60-70%}} {{legend0|#584cde|70-80%}} {{legend0|#3933e5|80-90%}} {{legend0|#0d0596|90-100%}}<br />
'''Wensel:''' {{legend0|#d9d9d9|40-50%}} {{legend0|#969696|60-70%}} 
| title              = U.S. senator
| before_election    = [[Harry F. Byrd]]
| before_party       = Democratic Party (US)
| after_election     = [[Harry F. Byrd]]
| after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in Virginia}}
{{See also|List of United States senators from Virginia}}
Incumbent [[Harry F. Byrd Sr.]] was re-elected after defeating Independent [[Louise Wensel]] and Social Democrat [[Clarke Robb]].

{{Election box begin | title=General election<ref name="House" />
}}
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Harry F. Byrd]] (Incumbent)
 | votes      = 317,221
 | percentage = 69.32%
 | change     = {{decrease}}4.03%
}}
{{Election box candidate with party link
 | party      = Independent
 | candidate  = [[Louise Wensel]]
 | votes      = 120,224
 | percentage = 26.27%
 | change     = {{increase}}26.27%
}}
{{Election box candidate with party link
 | party      = Social Democratic Party of America
 | candidate  = Clarke T. Robb
 | votes      = 20,154
 | percentage = 4.40%
 | change     = {{decrease}}7.98%
}}
{{Election box candidate with party link
 | party      = Write-in
 | candidate  = write-ins
 | votes      = 41
 | percentage = 0.01%
 | change     = {{decrease}}1.54%
}}
{{Election box majority
 | votes      = 196,997
 | percentage = 43.05%
 | change     =
}}
{{Election box turnout
 | votes      = 457,640
 | percentage =
 | change     =
}}
{{Election box hold with party link without swing
 | winner     = Democratic Party (US)
}}
{{Election box end}}
{{Clear}}

== Washington ==
{{Infobox election
| election_name = 1958 United States Senate election in Washington
| country = Washington
| flag_image = Flag of Washington (1923–1967).svg
| type = Presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Washington
| previous_year = 1952
| next_election = 1964 United States Senate election in Washington
| next_year = 1964
| election_date = November 4, 1958
| image1 = [[File:Henry M. Jackson.jpg|x150px]]
| nominee1 = '''[[Henry M. Jackson]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''597,040'''
| percentage1 = '''67.32%'''
| image2 = 
| nominee2 = William B. Bantz
| party2 = Republican Party (United States)
| popular_vote2 = 278,271
| percentage2 = 31.38%
| map_image = 1958 United States Senate election in Washington results map by county.svg
| map_size = 250px
| map_caption = County results<br/>'''Jackson''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}}
| title = U.S. Senator
| before_election = [[Henry M. Jackson]]
| before_party = Democratic Party (US)
| after_election = [[Henry M. Jackson]]
| after_party = Democratic Party (US)
}}
{{Main|1958 United States Senate election in Washington}}
{{See also|List of United States senators from Washington}}
{{Election box begin no change
 | title      = Washington general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Henry M. Jackson]] (Incumbent)
 | votes      = 597,040
 | percentage = 67.32%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = William B. Bantz
 | votes      = 278,271
 | percentage = 31.38%
}}
{{Election box candidate with party link no change
 | party      = Socialist Labor Party of America
 | candidate  = Henry Killman
 | votes      = 7,592
 | percentage = 0.86%
}}
{{Election box candidate with party link no change
 | party      = Constitution Party (US)
 | candidate  = Archie G. Idso
 | votes      = 2,257
 | percentage = 0.25%
}}
{{Election box candidate no change
 | party      = United Liberals and Socialists
 | candidate  = Jay G. Sykes
 | votes      = 1,662
 | percentage = 0.19%
}}
{{Election box majority no change
 | votes      = 318,769
 | percentage = 35.94%
}}
{{Election box turnout no change
 | votes      = 886,822
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}

{{Clear}}

== West Virginia ==
{{See also|List of United States senators from West Virginia}}

=== West Virginia (regular) ===
{{Infobox election
 | election_name      = West Virginia election
 | country            = West Virginia
 | type               = presidential
 | ongoing            = no
 | previous_election  = 1956 United States Senate special election in West Virginia
 | previous_year      = 1956 (special)
 | next_election      = 1964 United States Senate election in West Virginia
 | next_year          = 1964
 | image_size         = 125x136px
 | image1             = Robert C. Byrd – 1967.jpg
 | nominee1           = '''[[Robert Byrd]]'''
 | party1             = Democratic Party (US)
 | popular_vote1      = '''381,745'''
 | percentage1        = '''59.19%'''
 | image2             = WilliamCRevercomb.jpg
 | nominee2           = [[William Revercomb]]
 | party2             = Republican Party (US)
 | popular_vote2      = 263,172
 | percentage2        = 40.81%
 | map_image          = 1958 United States Senate election in West Virginia results map by county.svg
 | map_size           = 235px
 | map_caption        = County results<br />'''Byrd''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}<br />'''Revercomb''':  {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}
 | title              = U.S. Senator
 | before_election    = [[William Revercomb]]
 | before_party       = Republican Party (US)
 | after_election     = [[Robert Byrd]]
 | after_party        = Democratic Party (US)
}}
{{Main|1958 United States Senate election in West Virginia}}

In 1956, senator [[Harley M. Kilgore]] died, and former senator [[William Revercomb]] won his seat in the [[1956 United States Senate special election in West Virginia|1956 special election]]. Revercomb sought re-election to a third term, but was defeated by Congressman [[Robert Byrd]]. This election was the beginning of Byrd's lifelong career in the Senate.

{{Election box begin
 | title      = 1958 United States Senate election in West Virginia}}<ref name=Clerk/><ref>{{Cite web |title=WV US Senate |url=https://www.ourcampaigns.com/RaceDetail.html?RaceID=39753 |access-date=January 12, 2019}}</ref>
{{Election box winning candidate with party link
 | party      = Democratic Party (US)
 | candidate  = [[Robert Byrd]]
 | votes      = 381,745
 | percentage = 59.19%
 | change     = +18.39%
}}
{{Election box candidate with party link
 | party      = Republican Party (US)
 | candidate  = [[William Revercomb]] (Incumbent)
 | votes      = 263,172
 | percentage = 40.81%
 | change     = -18.39%
}}
{{Election box total
 | votes      = 644,917
 | percentage = 100.00%
 | change     = -21.5%
}}
{{Election box gain with party link no swing
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
}}
{{Election box end}}

{{Clear}}

=== West Virginia (special) ===
{{Infobox election
| election_name = 1958 United States Senate special election in West Virginia
| country = West Virginia
| type = presidential
| ongoing = no
| previous_election = 1954 United States Senate election in West Virginia
| previous_year = 1954
| election_date = November 4, 1958
| next_election = 1960 United States Senate election in West Virginia
| next_year = 1960
| image1 = [[File:Jennings Randolph headshot.jpg|x150px]]
| nominee1 = '''[[Jennings Randolph]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''374,167'''
| percentage1 = '''59.32%'''
| title = U.S. Senator
| before_election = [[John D. Hoblitzell Jr.]]
| before_party = Republican Party (United States)
| after_election = [[Jennings Randolph]]
| after_party = Democratic Party (United States)
| image2 = [[File:JohnDHoblitzell.jpg|x150px]]
| nominee2 = [[John D. Hoblitzell Jr.]]
| party2 = Republican Party (United States)
| popular_vote2 = 256,510
| percentage2 = 39.77%
| map_image = 1958 United States Senate special election in West Virginia results map by county.svg
| map_size = 235px
| map_caption = County results<br/>'''Randolph''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} <br/>'''Hoblitzell''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}
}}
{{Main|1958 United States Senate special election in West Virginia}}
Incumbent Democrat [[Matthew M. Neely]] died of cancer January 8, 1958, and Republican [[John D. Hoblitzell Jr.]] was appointed January 25, 1958, to continue the term, pending a special election.

Former Democratic congressman [[Jennings Randolph]] was elected to finish the term that would run through 1961. Byrd however, would become the senior Senator from West Virginia as he was elected to his first full six year term.

{{Election box begin no change
 | title      = West Virginia special election<ref>{{Cite web |title=1958 General Election |url=https://sos.wv.gov/elections/Documents/HistElecDocs/1958/1958%20General%20Election%20-%20Official%20Election%20Returns.pdf |access-date=June 13, 2020 |website=Historical Election Results and Turnout |publisher=[[Secretary of State of West Virginia]]}}</ref>
}}
{{Election box winning candidate with party link no change
 | candidate  = [[Jennings Randolph]]
 | party      = Democratic Party (US)
 | votes      = 374,167
 | percentage = 59.32%
}}
{{Election box candidate with party link no change
 | candidate  = [[John D. Hoblitzell Jr.]] (Incumbent)
 | party      = Republican Party (US)
 | votes      = 256,510
 | percentage = 39.77%
}}
{{Election box total no change
 | votes      = 630,677
 | percentage = 100%
}}
{{Election box end}}

Randolph would be re-elected four times and serve until his retirement in 1985.  Hoblitzell resumed his business interests and died January 6, 1962.

{{Clear}}

== Wisconsin ==
{{Infobox election
| election_name      = 1958 United States Senate election in Wisconsin
| country            = Wisconsin
| flag_year          = 1913
| type               = Presidential
| ongoing            = no
| previous_election  = 1957 United States Senate elections#Wisconsin 
| previous_year      = 1957 (special)
| next_election      = 1964 United States Senate election in Wisconsin
| next_year          = 1964
| election_date      = November 4, 1958
| image1             = [[File:William Proxmire.jpg|x150px]]
| nominee1           = '''[[William Proxmire]]'''
| party1             = Democratic Party (United States) 
| popular_vote1      = '''682,440'''
| percentage1        = '''57.13%'''
| image2             = 
| nominee2           = [[Roland J. Steinle]]
| party2             = Republican Party (United States) 
| popular_vote2      = 510,398
| percentage2        = 42.73%
| map_image          = 1958 United States Senate election in Wisconsin results map by county.svg
| map_size           = 250px
| map_caption        = County Results
'''Proxmire''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}<br/>
'''Kohler''': {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}}
| title              = U.S. Senator
| before_election    = [[William Proxmire]]
| before_party       = Democratic Party (United States)
| after_election     = [[William Proxmire]]
| after_party        = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Wisconsin}}
{{See also|List of United States senators from Wisconsin}}
{{Election box begin no change
 | title      = Wisconsin general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[William Proxmire]] (Incumbent)
 | votes      = 682,440
 | percentage = 57.12%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Roland J. Steinle]]
 | votes      = 510,398
 | percentage = 42.72%
}}
{{Election box candidate with party link no change
 | party      = Socialist Workers Party (US)
 | candidate  = James E. Boulton
 | votes      = 1,226
 | percentage = 0.10%
}}
{{Election box candidate with party link no change
 | party      = Socialist Labor Party of America
 | candidate  = [[Georgia Cozzini]]
 | votes      = 537
 | percentage = 0.04%
}}
{{Election box candidate no change
 | party      = None
 | candidate  = Scattering
 | votes      = 77
 | percentage = 0.01%
}}
{{Election box majority no change
 | votes      = 171,042
 | percentage = 14.40%
}}
{{Election box turnout no change
 | votes      = 1,194,678
 | percentage =
}}
{{Election box hold with party link no change
 | winner     = Democratic Party (US)
 | loser      =
 | swing      =
}}
{{Election box end}}
{{Clear}}

== Wyoming ==
{{Infobox election
| election_name = 1958 United States Senate election in Wyoming
| country = Wyoming
| flag_year = 
| type = presidential
| ongoing = no
| previous_election = 1952 United States Senate election in Wyoming
| previous_year = 1952
| next_election = 1964 United States Senate election in Wyoming
| next_year = 1964
| election_date = November 4, 1958
| image_size = x150px

| image1 = Gale W. McGee.jpg
| nominee1 = '''[[Gale W. McGee]]'''
| party1 = Democratic Party (United States)
| popular_vote1 = '''58,035'''
| percentage1 = '''50.84%'''

| image2 = Frank Barrett.jpg
| nominee2 = [[Frank A. Barrett]]
| party2 = Republican Party (United States)
| popular_vote2 = 56,122
| percentage2 = 49.16%

| map_image          = 1958 United States Senate election in Wyoming results map by county.svg
| map_size           = 255px
| map_caption        = County results<br/>'''McGee''': {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}<br/>'''Barrett''': {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. Senator
| before_election = [[Frank A. Barrett]]
| before_party = Republican Party (United States)
| after_election = [[Gale W. McGee]]
| after_party = Democratic Party (United States)
}}
{{Main|1958 United States Senate election in Wyoming}}
{{See also|List of United States senators from Wyoming}}
{{Election box begin no change
 | title      = Wyoming general election 1958<ref name=Clerk/>
}}
{{Election box winning candidate with party link no change
 | party      = Democratic Party (US)
 | candidate  = [[Gale McGee]]
 | votes      = 58,035
 | percentage = 50.84%
}}
{{Election box candidate with party link no change
 | party      = Republican Party (US)
 | candidate  = [[Frank A. Barrett]] (Incumbent)
 | votes      = 56,122
 | percentage = 49.16%
}}
{{Election box majority no change
 | votes      = 1,913
 | percentage = 1.68%
}}
{{Election box turnout no change
 | votes      = 114,157
 | percentage =
}}
{{Election box gain with party link no change
 | winner     = Democratic Party (US)
 | loser      = Republican Party (US)
 | swing      =
}}
{{Election box end}}
{{Clear}}

== See also ==
* [[1958 United States elections]]
** [[1958 United States gubernatorial elections]]
** [[1958 United States House of Representatives elections]]
* [[85th United States Congress]]
* [[86th United States Congress]]

== Notes ==
{{notelist}}

== References ==
{{reflist}}

{{United States Senate elections}}
{{1958 United States elections}}
{{Lyndon B. Johnson}}

[[Category:1958 United States Senate elections| ]]
[[Category:Lyndon B. Johnson]]
[[Category:Campaigns of Lyndon B. Johnson]]