Election 1964 Results
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1964 Senate election results by state and county
Lyndon Johnson's landslide helped Democrats win 26 of the 33 Senate seats up and push their majority to more than two-thirds of the chamber.
33 Senate races were held in 1964, plus 2 special elections. Democrats won 26 and Republicans 7.
The closest were Nevada (level), Ohio (D+0.4) and Pennsylvania (R+1.5). 4 seats changed party: California to the Republicans, Maryland to the Democrats, New York to the Democrats and North Dakota to the Democrats.
Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.
About the 1964 Senate elections
A year after Kennedy's assassination, Johnson beat Barry Goldwater with 486 electoral votes. The Civil Rights Act had passed that summer. Democrats won 26 Senate races and Republicans 7, and took seats in Maryland, New Mexico and New York while losing California. The new Senate passed the Voting Rights Act, Medicare and much of the Great Society. In New York, Robert Kennedy beat Kenneth Keating. In California, Republican George Murphy, a former film actor, beat Pierre Salinger, who had been appointed to the seat after serving as Kennedy's press secretary. In Ohio, Stephen Young held off Robert Taft Jr. by 0.4 points. The closest race was Nevada, where Howard Cannon beat Paul Laxalt by a few dozen votes after a recount. In Oklahoma, Fred Harris beat the football coach Bud Wilkinson in a special, and in Tennessee Ross Bass beat Howard Baker Jr., who would win the state's other seat two years later. Hiram Fong held Hawaii for the Republicans.
Every race
| State | Democrat | Votes | Republican | Votes | Others | Margin |
|---|---|---|---|---|---|---|
| Arizona | Roy Elson | 227,704 (48.6%) | Paul Fannin | 241,084 (51.4%) | R+2.9 | |
| California flip | Pierre Salinger | 3,411,912 (48.5%) | George Murphy | 3,628,555 (51.5%) | R+3.1 | |
| Connecticut | Thomas J. Dodd | 781,008 (64.6%) | John Lodge | 426,939 (35.3%) | 216 | D+29.3 |
| Delaware | Elbert N. Carvel | 96,850 (48.3%) | John J. Williams | 103,782 (51.7%) | 71 | R+3.5 |
| Florida | Spessard L. Holland | 997,585 (63.9%) | Claude E. Kirk Jr. | 562,212 (36.0%) | 540 | D+27.9 |
| Hawaii | Thomas P. Gill | 96,789 (46.4%) | Hiram L. Fong | 110,747 (53.0%) | 1,278 | R+6.7 |
| Indiana | R. Vance Hartke | 1,128,505 (54.3%) | D. Russell Bontrager | 941,519 (45.3%) | 6,939 | D+9.0 |
| Maine | Ed Muskie | 253,511 (66.6%) | Clifford McIntire | 127,040 (33.4%) | D+33.2 | |
| Maryland flip | Joseph D. Tydings | 678,649 (62.8%) | J. Glenn Beall Sr. | 402,393 (37.2%) | 7 | D+25.6 |
| Massachusetts | Ted Kennedy | 1,716,907 (74.3%) | Howard Whitmore Jr. | 587,663 (25.4%) | 7,458 | D+48.8 |
| Michigan | Philip A. Hart | 1,996,912 (64.4%) | Elly M. Peterson | 1,096,272 (35.3%) | 8,483 | D+29.0 |
| Minnesota | Eugene McCarthy | 931,363 (60.3%) | Wheelock Whitney | 605,933 (39.3%) | 6,304 | D+21.1 |
| Mississippi | John C. Stennis | 343,364 (100.0%) | none | D+100.0 | ||
| Missouri | Stuart Symington | 1,186,666 (66.6%) | Jean P. Bradshaw | 596,377 (33.4%) | D+33.1 | |
| Montana | Mike Mansfield | 180,643 (64.5%) | Alex Blewett | 99,367 (35.5%) | D+29.0 | |
| Nebraska | Raymond W. Arndt | 217,605 (38.6%) | Roman Hruska | 345,772 (61.4%) | 24 | R+22.8 |
| Nevada | Howard Cannon | 67,336 (50.0%) | Paul Laxalt | 67,288 (50.0%) | level | |
| New Jersey | Harrison Williams Jr. | 1,677,515 (61.9%) | Bernard M. Shanley | 1,011,280 (37.3%) | 20,780 | D+24.6 |
| New Mexico | Joseph Montoya | 178,209 (54.7%) | Edwin L. Mechem | 147,562 (45.3%) | D+9.4 | |
| New York flip | Robert Kennedy | 3,823,749 (52.3%) | Kenneth Keating | 3,104,056 (42.5%) | 376,685 | D+9.9 |
| North Dakota flip | Quentin Burdick | 149,264 (57.6%) | Thomas S. Kleppe | 109,681 (42.4%) | D+15.3 | |
| Ohio | Stephen M. Young | 1,923,608 (50.2%) | Robert A. Taft Jr. | 1,906,782 (49.8%) | D+0.4 | |
| Oklahoma (special) | Fred R. Harris | 466,782 (51.2%) | Bud Wilkinson | 445,392 (48.8%) | D+2.3 | |
| Pennsylvania | Genevieve Blatt | 2,359,223 (49.1%) | Hugh Scott | 2,429,858 (50.6%) | 14,754 | R+1.5 |
| Rhode Island | John O. Pastore | 319,607 (82.7%) | Ronald R. Lagueux | 66,715 (17.3%) | D+65.5 | |
| Tennessee | Al Gore Sr. | 570,542 (53.6%) | Dan Kuykendall | 493,475 (46.4%) | 1 | D+7.2 |
| Tennessee (special) | Ross Bass | 568,905 (52.1%) | Howard Baker Jr. | 517,330 (47.4%) | 4,853 | D+4.7 |
| Texas | Ralph Yarborough | 1,463,958 (56.2%) | George H.W. Bush | 1,134,337 (43.6%) | 5,561 | D+12.7 |
| Utah | Frank E. Moss | 227,822 (57.3%) | Ernest L. Wilkinson | 169,562 (42.7%) | D+14.7 | |
| Vermont | Frederick J. Fayette | 76,457 (46.5%) | Winston L. Prouty | 87,879 (53.5%) | 14 | R+7.0 |
| Virginia | Harry F. Byrd Sr. | 592,270 (63.8%) | Richard A. May | 176,624 (19.0%) | James W. Respess (Independent) 95,526 (10.3%) |
D+44.8 |
| Washington | Scoop Jackson | 875,950 (72.2%) | Lloyd J. Andrews | 337,138 (27.8%) | D+44.4 | |
| West Virginia | Robert C. Byrd | 515,015 (67.7%) | Cooper P. Benedict | 246,072 (32.3%) | D+35.3 | |
| Wisconsin | William Proxmire | 892,013 (53.3%) | Wilbur N. Renk | 780,116 (46.6%) | 1,647 | D+6.7 |
| Wyoming | Gale McGee | 76,485 (54.0%) | John S. Wold | 65,185 (46.0%) | D+8.0 |
Margin: the Democrat's share of all votes minus the Republican's. Margins are Democrat minus Republican, of all votes. Certified results, from the states' own archives, the MIT Election Data and Science Lab, Heideman (2026) and Algara & Amlani (2021). By county: "As they were" draws each county as it stood on election day; "Today's" shares the old votes among today's counties by area. County boundaries: Newberry Library, Atlas of Historical County Boundaries (CC BY-NC-SA 2.5). How these results were checked.