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United States · Election results history · 1930 Senate · Colorado
Election 1930 Results

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1930 US Senate election in Colorado

Edward P. Costigan (Democrat) beat George H. Shaw (Republican) in Colorado in 1930, 55.8% to 42.7%, a margin of 13.2 points and 42,541 votes.

Colorado changed party: in 1924 it went Republican, for Lawrence C. Phipps.

Democrats led in 54 of the 63 counties as they stood then and Republicans in 9. The largest, Denver, cast 81,038 votes and went to the Democrat by 9.8 points. The closest was Gilpin, where 3 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
Edward P. Costigan won Democratic 180,028 55.8%
George H. Shaw Republican 137,487 42.7%
All other candidates 4,833 1.5%
Total322,348

Every county

CountyDemocratRepublicanOthersTotalMargin
Denver 44,086 54.4% 36,164 44.6% 788 81,038 D+9.8
Pueblo 11,066 56.8% 8,204 42.1% 196 19,466 D+14.7
Weld 9,157 53.6% 7,753 45.3% 188 17,098 D+8.2
El Paso 7,830 53.2% 6,673 45.3% 216 14,719 D+7.9
Boulder 6,960 60.2% 4,457 38.6% 139 11,556 D+21.7
Larimer 6,304 60.5% 4,019 38.6% 101 10,424 D+21.9
Las Animas 6,719 64.7% 3,507 33.8% 164 10,390 D+30.9
Jefferson 5,149 54.3% 4,202 44.3% 125 9,476 D+10.0
Mesa 4,856 61.6% 2,924 37.1% 109 7,889 D+24.5
Arapahoe 4,111 55.7% 3,162 42.8% 109 7,382 D+12.9
Otero 3,833 57.0% 2,817 41.9% 76 6,726 D+15.1
Fremont 3,804 61.4% 2,252 36.3% 144 6,200 D+25.0
Huerfano 3,361 56.7% 2,502 42.2% 62 5,925 D+14.5
Adams 3,391 57.7% 2,379 40.5% 107 5,877 D+17.2
Delta 3,131 60.3% 1,981 38.2% 77 5,189 D+22.2
Logan 3,063 61.2% 1,868 37.3% 77 5,008 D+23.9
Morgan 2,765 55.6% 2,136 43.0% 72 4,973 D+12.6
Prowers 2,243 47.9% 2,352 50.3% 84 4,679 R+2.3
La Plata 2,631 58.9% 1,767 39.6% 66 4,464 D+19.4
Yuma 2,454 64.3% 1,257 32.9% 108 3,819 D+31.3
Routt 2,115 56.7% 1,521 40.7% 97 3,733 D+15.9
Montrose 1,789 49.5% 1,746 48.3% 80 3,615 D+1.2
Garfield 1,913 54.1% 1,552 43.9% 70 3,535 D+10.2
Kit Carson 1,892 57.8% 1,290 39.4% 94 3,276 D+18.4
Alamosa 1,843 58.6% 1,272 40.4% 32 3,147 D+18.1
Chaffee 1,941 64.1% 1,045 34.5% 44 3,030 D+29.6
Rio Grande 1,507 52.1% 1,333 46.1% 52 2,892 D+6.0
Washington 1,744 60.9% 1,036 36.2% 84 2,864 D+24.7
Conejos 1,211 43.5% 1,521 54.7% 49 2,781 R+11.1
Bent 1,513 54.9% 1,199 43.5% 43 2,755 D+11.4
Lincoln 1,625 59.6% 1,051 38.6% 50 2,726 D+21.1
Baca 1,266 48.0% 1,247 47.3% 124 2,637 D+0.7
Gunnison 1,461 55.7% 1,108 42.3% 53 2,622 D+13.5
Elbert 1,427 59.5% 916 38.2% 56 2,399 D+21.3
Lake 1,273 57.8% 896 40.7% 32 2,201 D+17.1
Moffat 993 45.8% 1,128 52.1% 45 2,166 R+6.2
Teller 1,108 54.5% 879 43.2% 47 2,034 D+11.3
Phillips 1,196 59.1% 720 35.6% 106 2,022 D+23.5
Saguache 856 43.5% 1,076 54.6% 37 1,969 R+11.2
Montezuma 1,148 59.4% 730 37.8% 54 1,932 D+21.6
Sedgwick 1,012 53.3% 852 44.8% 36 1,900 D+8.4
Crowley 929 51.1% 855 47.1% 33 1,817 D+4.1
Eagle 929 53.1% 788 45.0% 34 1,751 D+8.1
Costilla 920 52.6% 794 45.4% 36 1,750 D+7.2
Douglas 877 50.7% 841 48.6% 12 1,730 D+2.1
Kiowa 866 56.2% 644 41.8% 31 1,541 D+14.4
Cheyenne 822 56.1% 602 41.1% 40 1,464 D+15.0
Rio Blanco 478 36.3% 813 61.7% 26 1,317 R+25.4
Clear Creek 706 55.4% 550 43.2% 18 1,274 D+12.2
Park 593 46.9% 645 51.0% 26 1,264 R+4.1
Grand 468 39.0% 710 59.2% 22 1,200 R+20.2
San Miguel 594 55.3% 440 40.9% 41 1,075 D+14.3
Archuleta 606 57.2% 433 40.9% 20 1,059 D+16.3
Ouray 565 57.4% 392 39.8% 28 985 D+17.6
Custer 507 51.6% 457 46.5% 19 983 D+5.1
Pitkin 484 55.5% 350 40.1% 38 872 D+15.4
San Juan 484 64.8% 237 31.7% 26 747 D+33.1
Gilpin 307 49.2% 310 49.7% 7 624 R+0.5
Summit 333 54.1% 274 44.6% 8 615 D+9.6
Dolores 279 48.6% 254 44.3% 41 574 D+4.4
Jackson 230 41.4% 315 56.7% 11 556 R+15.3
Mineral 180 48.3% 172 46.1% 21 373 D+2.1
Hinsdale 124 51.0% 117 48.1% 2 243 D+2.9

Counties as they stood in 1930; 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