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United States · Election results history · 1980 Senate · Colorado
Election 1980 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.

1980 US Senate election in Colorado

Gary Hart (Democrat) beat Mary Estill Buchanan (Republican) in Colorado in 1980, 50.3% to 48.7%, a margin of 1.6 points and 19,206 votes.

The Democratic hold continued from 1974, when Gary Hart also won.

Republicans led in 48 of the 63 counties as they stood then and Democrats in 15. The largest, Denver, cast 202,179 votes and went to the Democrat by 25.1 points. The closest was San Juan, where 25 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
Gary Hart won Democratic 590,501 50.3%
Mary Estill Buchanan Republican 571,295 48.7%
All other candidates 11,346 1.0%
Total1,173,142

Every county

CountyDemocratRepublicanOthersTotalMargin
Denver 125,136 61.9% 74,337 36.8% 2,706 202,179 D+25.1
Jefferson 77,764 48.3% 81,766 50.8% 1,515 161,045 R+2.5
Arapahoe 58,723 46.6% 65,854 52.2% 1,470 126,047 R+5.7
El Paso 38,897 39.7% 58,376 59.6% 688 97,961 R+19.9
Boulder 51,770 56.9% 38,608 42.4% 663 91,041 D+14.5
Adams 44,786 52.7% 39,167 46.1% 1,024 84,977 D+6.6
Larimer 32,564 50.7% 31,151 48.5% 528 64,243 D+2.2
Pueblo 28,167 58.1% 19,746 40.7% 580 48,493 D+17.4
Weld 21,503 50.0% 21,224 49.3% 281 43,008 D+0.6
Mesa 14,222 42.8% 18,790 56.5% 251 33,263 R+13.7
La Plata 5,732 47.4% 6,293 52.0% 69 12,094 R+4.6
Douglas 4,256 36.8% 7,230 62.5% 76 11,562 R+25.7
Fremont 5,026 43.9% 6,275 54.8% 142 11,443 R+10.9
Montrose 3,348 34.2% 6,391 65.2% 58 9,797 R+31.1
Delta 3,870 41.9% 5,315 57.5% 56 9,241 R+15.6
Garfield 4,294 47.6% 4,638 51.4% 96 9,028 R+3.8
Otero 3,621 42.9% 4,662 55.3% 153 8,436 R+12.3
Logan 3,444 41.3% 4,854 58.2% 41 8,339 R+16.9
Morgan 3,472 43.1% 4,460 55.3% 131 8,063 R+12.3
Las Animas 4,158 55.5% 3,299 44.0% 41 7,498 D+11.5
Routt 2,986 44.6% 3,655 54.6% 55 6,696 R+10.0
Montezuma 2,502 42.3% 3,346 56.6% 65 5,913 R+14.3
Eagle 2,841 49.0% 2,919 50.3% 39 5,799 R+1.3
Pitkin 3,115 57.6% 2,269 42.0% 24 5,408 D+15.6
Chaffee 2,246 42.4% 2,970 56.1% 82 5,298 R+13.7
Prowers 2,216 44.3% 2,679 53.6% 105 5,000 R+9.3
Gunnison 2,181 45.0% 2,591 53.4% 77 4,849 R+8.5
Alamosa 2,322 48.1% 2,461 51.0% 41 4,824 R+2.9
Moffat 2,005 42.0% 2,647 55.5% 120 4,772 R+13.5
Yuma 1,979 42.5% 2,650 56.9% 31 4,660 R+14.4
Rio Grande 1,778 39.4% 2,698 59.8% 34 4,510 R+20.4
Summit 2,331 53.5% 1,985 45.6% 39 4,355 D+7.9
Teller 1,300 34.6% 2,427 64.5% 33 3,760 R+30.0
Kit Carson 1,380 37.8% 2,240 61.4% 26 3,646 R+23.6
Grand 1,464 42.1% 1,989 57.2% 23 3,476 R+15.1
Conejos 1,547 46.2% 1,775 53.0% 28 3,350 R+6.8
Clear Creek 1,477 46.8% 1,648 52.2% 34 3,159 R+5.4
Elbert 1,202 38.3% 1,901 60.6% 32 3,135 R+22.3
Huerfano 1,637 53.4% 1,411 46.1% 16 3,064 D+7.4
Lake 1,519 51.4% 1,379 46.6% 60 2,958 D+4.7
Washington 1,031 36.9% 1,739 62.2% 26 2,796 R+25.3
Baca 906 33.8% 1,758 65.5% 19 2,683 R+31.8
Park 1,105 41.3% 1,517 56.6% 56 2,678 R+15.4
Rio Blanco 952 37.7% 1,542 61.0% 32 2,526 R+23.4
Lincoln 920 38.5% 1,455 60.9% 16 2,391 R+22.4
Phillips 1,096 46.5% 1,246 52.9% 14 2,356 R+6.4
Bent 953 43.8% 1,208 55.5% 17 2,178 R+11.7
Saguache 1,075 51.0% 1,017 48.2% 17 2,109 D+2.8
Archuleta 757 40.7% 1,092 58.6% 13 1,862 R+18.0
San Miguel 984 54.6% 808 44.9% 9 1,801 D+9.8
Sedgwick 646 38.1% 1,045 61.7% 4 1,695 R+23.5
Costilla 1,050 67.2% 508 32.5% 5 1,563 D+34.7
Crowley 576 38.8% 902 60.8% 5 1,483 R+22.0
Gilpin 716 53.0% 619 45.8% 17 1,352 D+7.2
Cheyenne 487 39.6% 726 59.1% 16 1,229 R+19.4
Ouray 426 35.4% 771 64.0% 7 1,204 R+28.7
Kiowa 487 42.2% 658 57.0% 10 1,155 R+14.8
Jackson 392 36.9% 663 62.5% 6 1,061 R+25.5
Custer 333 32.8% 669 66.0% 12 1,014 R+33.1
Dolores 331 42.1% 449 57.1% 6 786 R+15.0
San Juan 261 47.4% 286 51.9% 4 551 R+4.5
Mineral 137 30.7% 305 68.4% 4 446 R+37.7
Hinsdale 99 29.4% 236 70.0% 2 337 R+40.7

Counties as they stood in 1980; 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.

Colorado Senate elections we hold

YearWinnerMargin
2022 Michael Bennet (D) D+14.6
2020 John W Hickenlooper (D) D+9.3
2016 Michael F. Bennet (D) D+5.7
2014 Cory Gardner (R) R+1.9
2010 Michael F. Bennet (D) D+1.6
2008 Mark Udall (D) D+10.3
2004 Ken Salazar (D) D+4.8
2002 Wayne Allard (R) R+4.9
1998 Ben Nighthorse Campbell (R) R+27.5
1996 Wayne Allard (R) R+5.7
1992 Ben Nighthorse Campbell (D) D+9.1
1990 Hank Brown (R) R+14.0
1986 Timothy E. Wirth (D) D+1.6
1984 William L. Armstrong (R) R+29.6
1980 Gary Hart (D) D+1.6
1978 William L. Armstrong (R) R+18.4
1974 Gary Hart (D) D+17.7
1972 Floyd K. Haskell (D) D+1.0
1968 Peter H. Dominick (R) R+17.1
1966 Gordon Allott (R) R+16.1
1962 Peter H. Dominick (R) R+8.0
1960 Gordon Allott (R) R+7.5
1956 John A. Carroll (D) D+0.4
1954 Gordon Allott (R) R+2.6
1950 Eugene D. Millikin (R) R+6.5
1948 Edwin C. Johnson (D) D+34.4
1944 Eugene Millikin (R) R+12.7
1942 Edwin C. Johnson (D) D+1.0
1938 Alva B. Adams (D) D+18.1
1936 Edwin C. Johnson (D) D+28.2
1932 Alva B. Adams (D) D+6.4
1930 Edward P. Costigan (D) D+13.2
1926 Charles W. Waterman (R) R+3.9
1924 Lawrence C. Phipps (R) R+6.3
1920 Samuel D. Nicholson (R) R+15.2
1918 Lawrence C. Phipps (R) R+1.6
1914 Charles S. Thomas (D) D+1.3