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United States · Election results history · 1964 Senate · Montana
Election 1964 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

1964 US Senate election in Montana

Mike Mansfield (Democrat) beat Alex Blewett (Republican) in Montana in 1964, 64.5% to 35.5%, a margin of 29.0 points and 81,276 votes.

The Democratic hold continued from 1958, when Mike Mansfield also won.

Democrats led in 51 of the 56 counties as they stood then and Republicans in 5. The largest, Yellowstone, cast 32,779 votes and went to the Democrat by 21.0 points. The closest was Carter, where 46 votes separated the two parties.

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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.

Senate

CandidatePartyVotesShare
Mike Mansfield won Democratic 180,643 64.5%
Alex Blewett Republican 99,367 35.5%
Total280,010

Every county

CountyDemocratRepublicanOthersTotalMargin
Yellowstone 19,834 60.5% 12,945 39.5% 32,779 D+21.0
Cascade 18,693 70.7% 7,749 29.3% 26,442 D+41.4
Missoula 14,834 69.4% 6,531 30.6% 21,365 D+38.9
Silver Bow 15,064 73.4% 5,454 26.6% 20,518 D+46.8
Flathead 9,405 64.1% 5,258 35.9% 14,663 D+28.3
Lewis And Clark 8,566 62.8% 5,080 37.2% 13,646 D+25.5
Gallatin 6,273 56.2% 4,884 43.8% 11,157 D+12.4
Hill 4,719 72.0% 1,831 28.0% 6,550 D+44.1
Fergus 3,860 59.7% 2,604 40.3% 6,464 D+19.4
Deer Lodge 4,606 72.4% 1,755 27.6% 6,361 D+44.8
Lake 3,419 55.7% 2,717 44.3% 6,136 D+11.4
Park 3,241 57.9% 2,356 42.1% 5,597 D+15.8
Ravalli 3,494 62.6% 2,089 37.4% 5,583 D+25.2
Custer 3,181 62.1% 1,942 37.9% 5,123 D+24.2
Valley 3,520 69.6% 1,537 30.4% 5,057 D+39.2
Lincoln 3,655 75.0% 1,219 25.0% 4,874 D+50.0
Dawson 3,245 67.8% 1,544 32.2% 4,789 D+35.5
Richland 2,796 65.2% 1,493 34.8% 4,289 D+30.4
Roosevelt 2,969 70.1% 1,265 29.9% 4,234 D+40.2
Big Horn 2,777 68.2% 1,292 31.8% 4,069 D+36.5
Carbon 2,424 63.2% 1,412 36.8% 3,836 D+26.4
Glacier 2,513 65.8% 1,309 34.2% 3,822 D+31.5
Chouteau 1,976 58.7% 1,392 41.3% 3,368 D+17.3
Beaverhead 1,666 50.8% 1,616 49.2% 3,282 D+1.5
Teton 1,922 60.0% 1,282 40.0% 3,204 D+20.0
Powell 1,989 64.9% 1,078 35.1% 3,067 D+29.7
Sanders 2,078 69.3% 919 30.7% 2,997 D+38.7
Pondera 1,841 63.2% 1,072 36.8% 2,913 D+26.4
Toole 1,837 63.2% 1,071 36.8% 2,908 D+26.3
Phillips 1,721 59.8% 1,156 40.2% 2,877 D+19.6
Sheridan 2,109 75.9% 671 24.1% 2,780 D+51.7
Blaine 1,928 69.7% 837 30.3% 2,765 D+39.5
McCone 1,187 48.7% 1,252 51.3% 2,439 R+2.7
Rosebud 1,358 57.0% 1,024 43.0% 2,382 D+14.0
Stillwater 1,268 54.5% 1,059 45.5% 2,327 D+9.0
Musselshell 1,305 62.8% 772 37.2% 2,077 D+25.7
Daniels 1,065 61.0% 680 39.0% 1,745 D+22.1
Jefferson 1,005 60.7% 652 39.3% 1,657 D+21.3
Madison 1,002 64.5% 551 35.5% 1,553 D+29.0
Judith Basin 956 61.6% 596 38.4% 1,552 D+23.2
Fallon 905 58.5% 642 41.5% 1,547 D+17.0
Sweet Grass 708 46.0% 831 54.0% 1,539 R+8.0
Wheatland 866 61.1% 552 38.9% 1,418 D+22.1
Mineral 998 78.0% 282 22.0% 1,280 D+55.9
Broadwater 655 52.7% 589 47.3% 1,244 D+5.3
Granite 666 54.8% 549 45.2% 1,215 D+9.6
Liberty 651 54.6% 541 45.4% 1,192 D+9.2
Powder River 518 46.9% 587 53.1% 1,105 R+6.2
Prairie 557 53.4% 487 46.6% 1,044 D+6.7
Carter 522 52.3% 476 47.7% 998 D+4.6
Meagher 442 47.2% 495 52.8% 937 R+5.7
Garfield 423 46.2% 493 53.8% 916 R+7.6
Wibaux 512 66.8% 255 33.2% 767 D+33.5
Golden Valley 352 57.1% 264 42.9% 616 D+14.3
Treasure 325 60.3% 214 39.7% 539 D+20.6
Petroleum 242 59.6% 164 40.4% 406 D+19.2

Counties as they stood in 1964; some have since been split, merged or renamed. Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Montana Senate elections we hold

YearWinnerMargin
2024 Tim Sheehy (R) R+7.1
2020 Steve Daines (R) R+10.0
2018 Jon Tester (D) D+3.6
2014 Steve Daines (R) R+17.7
2012 Jon Tester (D) D+3.7
2008 Max Baucus (D) D+45.8
2006 Jon Tester (D) D+0.9
2002 Max Baucus (D) D+31.0
2000 Conrad Burns (R) R+3.3
1996 Max Baucus (D) D+4.9
1994 Conrad R. Burns (R) R+24.7
1990 Max Baucus (D) D+38.7
1988 Conrad Burns (R) R+3.7
1984 Max Baucus (D) D+16.2
1982 John Melcher (D) D+12.8
1978 Max Baucus (D) D+11.4
1976 John Melcher (D) D+28.3
1972 Lee Metcalf (D) D+3.9
1970 Mike Mansfield (D) D+21.1
1966 Lee Metcalf (D) D+6.3
1964 Mike Mansfield (D) D+29.0
1960 Lee Metcalf (D) D+1.5
1958 Mike Mansfield (D) D+52.4
1954 James E. Murray (D) D+0.8
1952 Mike Mansfield (D) D+2.2
1948 James E. Murray (D) D+13.9
1946 Zales N. Ecton (R) R+8.1
1942 James E. Murray (D) D+0.7
1940 Burton K. Wheeler (D) D+46.9
1936 James E. Murray (D) D+27.9
1934 Burton K. Wheeler (D) D+41.4
1930 Thomas J. Walsh (D) D+22.5
1928 Burton K. Wheeler (D) D+6.4
1924 Thomas J. Walsh (D) D+10.4
1922 Burton K. Wheeler (D) D+11.8
1918 Thomas J. Walsh (D) D+5.3
1916 Henry L. Myers (D) D+7.7