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United States · Election results history · 2018 House · Colorado
Election 2018 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.

2018 US House elections in Colorado

Colorado elected 7 members of the House in 2018: Democrats won 4 seats and Republicans 3.

The closest was the 3rd district, decided by 8.0 points: Scott R. Tipton (Republican) beat Diane Mitsch Bush (Democrat), 51.5% to 43.6%, a margin of 8.0 points and 26,779 votes.

In the House vote by county, Republicans led in 42 of the 64 counties and Democrats in 22. The largest, Denver, cast 306,068 votes and went to the Democrat by 59.5 points. The closest was Mineral, where 80 votes separated the two parties.

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If the polls miss like

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.

Every district

DistrictDemocratVotesRepublicanVotesOthersMargin
1 Diana Degette272,886 (73.8%) Charles Casper Stockham85,207 (23.0%) 11,600 D+50.8
2 Joe Neguse259,608 (60.3%) Peter Yu144,901 (33.6%) 26,105 D+26.6
3 Diane Mitsch Bush146,426 (43.6%) Scott R. Tipton173,205 (51.5%) 16,558 R+8.0
4 Karen McCormick145,544 (39.4%) Ken Buck224,038 (60.6%) R+21.2
5 Stephany Rose Spaulding126,848 (39.3%) Doug Lamborn184,002 (57.0%) 11,795 R+17.7
6 Jason Crow187,639 (54.1%) Mike Coffman148,685 (42.9%) 10,493 D+11.2
7 Ed Perlmutter204,260 (60.4%) Mark Barrington119,734 (35.4%) 14,012 D+25.0

The House vote in every county

CountyDemocratRepublicanOthersTotalMargin
Denver 239,299 78.2% 57,186 18.7% 9,583 306,068 D+59.5
Jefferson 173,298 56.9% 118,773 39.0% 12,587 304,658 D+17.9
El Paso 109,564 39.9% 155,070 56.4% 10,070 274,704 R+16.6
Arapahoe 154,743 57.0% 108,926 40.1% 8,032 271,701 D+16.9
Larimer 92,787 52.5% 72,558 41.0% 11,458 176,803 D+11.4
Douglas 73,454 41.7% 101,124 57.5% 1,415 175,993 R+15.7
Boulder 130,071 74.5% 38,116 21.8% 6,372 174,559 D+52.7
Adams 97,026 56.8% 66,401 38.9% 7,409 170,836 D+17.9
Weld 47,732 38.2% 77,310 61.8% 7 125,049 R+23.7
Mesa 21,460 31.7% 42,483 62.8% 3,757 67,700 R+31.1
Pueblo 30,541 45.8% 31,787 47.7% 4,330 66,658 R+1.9
Broomfield 20,290 56.9% 13,019 36.5% 2,343 35,652 D+20.4
La Plata 15,556 54.6% 11,586 40.7% 1,355 28,497 D+13.9
Garfield 11,410 47.2% 11,836 49.0% 922 24,168 R+1.8
Eagle 13,308 60.0% 7,935 35.8% 949 22,192 D+24.2
Fremont 5,972 30.6% 12,752 65.4% 778 19,502 R+34.8
Montrose 5,388 28.3% 12,767 67.1% 874 19,029 R+38.8
Delta 4,543 29.9% 9,958 65.6% 688 15,189 R+35.7
Elbert 3,404 23.4% 11,170 76.6% 14,574 R+53.3
Summit 8,835 63.3% 4,068 29.1% 1,057 13,960 D+34.1
Routt 8,353 62.2% 4,603 34.3% 473 13,429 D+27.9
Teller 4,042 31.5% 8,375 65.2% 431 12,848 R+33.7
Montezuma 4,275 36.3% 6,943 59.0% 553 11,771 R+22.7
Chaffee 5,506 50.6% 5,035 46.2% 347 10,888 D+4.3
Morgan 2,927 27.6% 7,680 72.4% 10,607 R+44.8
Pitkin 7,150 72.6% 2,446 24.8% 252 9,848 D+47.8
Park 3,475 37.0% 5,350 56.9% 575 9,400 R+19.9
Gunnison 5,383 61.2% 2,991 34.0% 418 8,792 D+27.2
Logan 1,864 21.8% 6,667 78.2% 8,531 R+56.3
Grand 3,328 43.8% 3,609 47.5% 654 7,591 R+3.7
Otero 2,892 38.8% 4,558 61.2% 7,450 R+22.4
Archuleta 2,635 38.6% 3,850 56.5% 334 6,819 R+17.8
Las Animas 2,999 48.1% 3,231 51.9% 6,230 R+3.7
Alamosa 2,875 47.2% 2,977 48.9% 236 6,088 R+1.7
Moffat 842 15.6% 4,347 80.6% 207 5,396 R+65.0
Clear Creek 2,847 53.5% 2,062 38.8% 410 5,319 D+14.8
Rio Grande 1,804 36.5% 2,936 59.4% 206 4,946 R+22.9
Prowers 1,097 26.5% 3,036 73.4% 1 4,134 R+46.9
San Miguel 3,032 74.0% 937 22.9% 128 4,097 D+51.1
Yuma 655 16.0% 3,440 84.0% 4,095 R+68.0
Huerfano 1,638 45.0% 1,764 48.5% 234 3,636 R+3.5
Conejos 1,547 43.5% 1,888 53.0% 125 3,560 R+9.6
Gilpin 1,732 51.8% 1,304 39.0% 309 3,345 D+12.8
Ouray 1,826 56.7% 1,278 39.7% 118 3,222 D+17.0
Kit Carson 515 16.7% 2,559 83.2% 1 3,075 R+66.5
Rio Blanco 396 13.0% 2,544 83.3% 113 3,053 R+70.4
Custer 799 27.7% 1,944 67.3% 145 2,888 R+39.6
Lake 1,645 57.5% 1,057 37.0% 158 2,860 D+20.6
Saguache 1,502 56.1% 1,052 39.3% 121 2,675 D+16.8
Washington 275 11.4% 2,129 88.6% 2,404 R+77.1
Lincoln 373 17.9% 1,708 82.1% 2,081 R+64.2
Phillips 398 19.6% 1,634 80.4% 2,032 R+60.8
Baca 320 17.2% 1,543 82.8% 1,863 R+65.6
Bent 651 35.0% 1,208 65.0% 1,859 R+30.0
Costilla 1,043 63.4% 527 32.0% 75 1,645 D+31.4
Crowley 412 29.6% 980 70.4% 1,392 R+40.8
Sedgwick 269 22.3% 935 77.7% 1,204 R+55.3
Dolores 257 21.4% 878 73.2% 64 1,199 R+51.8
Cheyenne 130 13.2% 853 86.8% 983 R+73.6
Jackson 138 17.8% 599 77.2% 39 776 R+59.4
Kiowa 96 12.5% 671 87.5% 767 R+75.0
Mineral 246 40.9% 326 54.2% 29 601 R+13.3
Hinsdale 211 37.8% 321 57.5% 26 558 R+19.7
San Juan 264 57.8% 172 37.6% 21 457 D+20.1

Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Colorado in every House election we hold

YearSeatsHouse vote
2024 D 4, R 4 D+11.8
2022 D 5, R 3 D+12.7
2020 D 4, R 3 D+9.5
2018 D 4, R 3 D+10.5
2016 D 3, R 4 R+0.9
2014 D 3, R 4 R+3.2
2012 D 3, R 4 R+2.6
2010 D 3, R 4 R+4.7
2008 D 5, R 2 D+11.8
2006 D 4, R 3 D+13.6
2004 D 3, R 4 D+0.2
2002 D 2, R 5 R+11.7
2000 D 2, R 4 R+29.1
1998 D 2, R 4 R+14.3
1996 D 2, R 4 R+16.2
1994 D 2, R 4 R+30.6
1992 D 2, R 4 R+4.5
1990 D 3, R 3 D+1.6