United States Senate elections, 1964

United States Senate elections, 1964
United States
November 3, 1964

33 of the 100 seats in the United States Senate, plus 2 mid-term vacancies
51 seats needed for a majority
  Majority party Minority party
Leader Mike Mansfield Everett Dirksen
Party Democratic Republican
Leader's seat Montana Illinois
Last election 66 seats 34 seats
Seats won 68 32
Seat change Increase 2 Decrease 2
Popular vote 30,217,130 22,654,661
Percentage 56.3% 42.2%
Swing Increase 5.9% Decrease 6.8%
Seats up 26 9

     Democratic gain      Democratic hold
     Republican gain      Republican hold

Majority Leader before election

Mike Mansfield

Elected Majority Leader

Mike Mansfield

The United States Senate elections, 1964 coincided with the election of President Lyndon B. Johnson by an overwhelming majority, to a full term. His Democratic Party picked up a net two seats from the Republicans. As of 2016, this is the last time either party has had a two-thirds majority in the Senate, which would have hypothetically allowed the Senate Democrats to override a veto, convict and expel certain officials, or invoke cloture without any votes from Republicans. The Senate election coincided with Democratic gains in the House in the same year.

Notably, of the 34 seats up for election this year, 25 of were held by Democrats, who managed to retain 24 of them. A party defending 2/3 of the seats up for election would not make net gains in the Senate again until 2012. Coincidentally, with the same Senate Class, Class 1.

Future President George H. W. Bush ran for a seat in Texas, but lost.

Change in Senate composition

Before the elections

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43 D44 D45 D46 D47 D48 D49 D50
Majority → D51
D60 D59 D58 D57 D56 D55 D54 D53 D52
D61 D62 D63 D64 D65 D66 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

As a result of the elections

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43 D44 D45 D46 D47 D48 D49 D50
Majority → D51
D60 D59 D58 D57 D56 D55 D54 D53 D52
D61 D62 D63 D64O D65O D66+ D67+ D68+ R32+ R31O
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10
D# Democratic
R# Republican
Incumbent re-elected or appointee elected to finish term
O Party hold: New senator elected from same party
+ Party gain: New senator elected from different party


Republicans replaced by Republicans

  1. Arizona: Barry Goldwater retired to run for President. He was replaced by Paul Fannin (R)

Democrats replaced by Democrats

  1. Tennessee (Class 2): Appointee Herbert S. Walters (D) was replaced by Ross Bass (D)

Incumbents who lost elections

Democrats lost to Republicans

  1. California: Appointee Pierre Salinger (D) lost to George Murphy (R) for the next term

Democrats lost to Democrats

  1. Oklahoma (Class 2): Appointee J. Howard Edmondson (D) lost nomination to Fred R. Harris (D), who won the general election

Republicans lost to Democrats

  1. Maryland: James Glenn Beall (R) lost to Joseph D. Tydings (D)
  2. New Mexico: Edwin L. Mechem (R) lost to Joseph M. Montoya (D)
  3. New York: Kenneth B. Keating (R) lost to Robert F. Kennedy (D)

Other races

In a close race in Nevada, Democratic incumbent Howard Cannon won re-election over Republican Lieutenant Governor Paul Laxalt by fewer than 100 votes. Laxalt joined Cannon in the Senate when he won Nevada's other seat in 1974.

Subsequent gains

  1. Michigan: Patrick V. McNamara (D) died April 30, 1966, and was replaced May 11, 1966 by appointee Robert P. Griffin (R).

Complete list of races

Bold state indicates a separate article on that election.

Bold candidate indicates the winner.

State Incumbent Party Result Other candidates
Arizona Barry Goldwater Republican Retired
Republican hold
Paul Fannin (Republican) 51.4%
Roy Elson (Democratic) 48.6%
California Pierre Salinger Democratic Appointee lost election to next term
Republican gain
George Murphy (Republican) 51.5%
Pierre Salinger (Democratic) 48.5%
Connecticut Thomas J. Dodd Democratic Re-elected Thomas J. Dodd (Democratic) 64.6%
John Davis Lodge (Republican) 35.3%
Delaware John J. Williams Republican Re-elected John J. Williams (Republican) 51.7%
Elbert N. Carvel (Democratic) 48.3%
Hollon (Socialist Labor) 0.03%
Florida Spessard Holland Democratic Re-elected Spessard Holland (Democratic) 63.9%
Claude R. Kirk, Jr. (Republican) 36.0%
Hawaii Hiram L. Fong Republican Re-elected Hiram L. Fong (Republican) 53.0%
Thomas P. Gill (Democratic) 46.4%
Lawrence Domine (Independent) 0.6%
Indiana Vance Hartke Democratic Re-elected Vance Hartke (Democratic) 54.3%
D. Russell Bontrager (Republican) 45.3%
J. Ralston Miller (Prohibition) 0.3%
Casimer Kanczuzewski (Socialist Labor) 0.06%
Maine Edmund S. Muskie Democratic Re-elected Edmund S. Muskie (Democratic) 66.6%
Clifford McIntire (Republican) 33.4%
Maryland James Glenn Beall Republican Lost re-election
Democratic gain
Joseph D. Tydings (Democratic) 62.8%
James Glenn Beall (Republican) 37.2%
Massachusetts Ted Kennedy Democratic Re-elected Ted Kennedy (Democratic) 74.3%
Howard Whitmore, Jr. (Republican) 25.4%
Lawrence Gilfedder (Socialist Labor) 0.2%
Grace F. Luder (Prohibition) 0.1%
Michigan Philip A. Hart Democratic Re-elected Philip A. Hart (Democratic) 64.4%
Elly M. Peterson (Republican) 35.3%
Ernest C. Smith (Freedom Now) 0.1%
Evelyn Sell (Socialist Workers) 0.09%
James Sim (Socialist Labor) 0.05%
Minnesota Eugene McCarthy Democratic Re-elected Eugene McCarthy (Democratic) 60.3%
Wheelock Whitney (Republican) 39.3%
William Braatz (Industrial Government) 0.3%
Everett E. Luoma (Socialist Workers) 0.1%
Mississippi John C. Stennis Democratic Re-elected John C. Stennis (Democratic) unopposed
Missouri Stuart Symington Democratic Re-elected Stuart Symington (Democratic) 66.6%
Jean P. Bradshaw (Republican) 33.4%
Montana Mike Mansfield Democratic Re-elected Mike Mansfield (Democratic) 64.5%
Alex Blewett (Republican) 35.5%
Nebraska Roman L. Hruska Republican Re-elected Roman L. Hruska (Republican) 61.4%
Raymond W. Arndt (Democratic) 38.6%
Nevada Howard W. Cannon Democratic Re-elected Howard W. Cannon (Democratic) 50.0%
Paul Laxalt (Republican) 50.0%
New Jersey Harrison A. Williams, Jr. Democratic Re-elected Harrison A. Williams, Jr. (Democratic) 61.9%
Bernard M. Shanley (Republican) 37.3%
New Mexico Edwin L. Mechem Republican Lost re-election
Democratic gain
Joseph M. Montoya (Democratic) 54.7%
Edwin L. Mechem (Republican) 45.3%
New York Kenneth B. Keating Republican Lost re-election
Democratic gain
Robert F. Kennedy (Democratic) 53.5%
Kenneth B. Keating (Republican) 43.4%
North Dakota Quentin N. Burdick Democratic Re-elected Quentin N. Burdick (Democratic) 57.6%
Thomas S. Kleppe (Republican) 42.4%
Ohio Stephen M. Young Democratic Re-elected Stephen M. Young (Democratic) 50.2%
Robert A. Taft, Jr. (Republican) 49.8%
Special: Class 2
J. Howard Edmondson Democratic Appointee lost nomination to finish term
Democratic hold
Fred R. Harris (Democratic) 51.2%
Bud Wilkinson (Republican) 48.8%
Pennsylvania Hugh Scott Republican Re-elected Hugh Scott (Republican) 50.6%
Genevieve Blatt (Democratic) 49.1%
Rhode Island John O. Pastore Democratic Re-elected John O. Pastore (Democratic) 82.7%
Ronald R. Lagueux (Republican)
Tennessee Albert Gore, Sr. Democratic Re-elected Albert Gore, Sr. (Democratic) 53.6%
Dan H. Kuykendall (Republican) 46.4%
Special: Class 2
Herbert S. Walters Democratic Appointee retired
Democratic hold
Ross Bass (Democratic) 52.1%
Howard H. Baker, Jr. (Republican) 47.4%
Texas Ralph Yarborough Democratic Re-elected Ralph Yarborough (Democratic) 56.2%
George H. W. Bush (Republican) 43.6%
Utah Frank E. Moss Democratic Re-elected Frank E. Moss (Democratic) 57.3%
Ernest L. Wilkinson (Republican) 42.7%
Vermont Winston L. Prouty Republican Re-elected Winston L. Prouty (Republican) 53.5%
Frederick J. Fayette (Democratic) 46.5%
Virginia Harry F. Byrd Democratic Re-elected Harry F. Byrd (Democratic) 63.8%
Richard A. May (Republican) 19.0%
James W. Respess (Independent) 10.3%
Washington Henry M. Jackson Democratic Re-elected Henry M. Jackson (Democratic) 72.2%
Lloyd J. Andrews (Republican) 27.8%
West Virginia Robert C. Byrd Democratic Re-elected Robert C. Byrd (Democratic) 67.7%
Cooper P. Benedict (Republican) 32.3%
Wisconsin William Proxmire Democratic Re-elected William Proxmire (Democratic) 53.3%
Wilbur N. Renk (Republican) 46.6%
Wyoming Gale McGee Democratic Re-elected Gale McGee (Democratic) 54.0%
John S. Wold (Republican) 46.0%

See also

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