Summit County, CO
CO · Presidential Elections 1880–2024
Summit County, CO (Colorado) voted D+37.1 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 11,762 votes (67.04%) to 5,244 (29.89%) for Trump.
This represents a R+2.4% swing toward Republicans compared to 2020. Summit County is classified as a deep Democratic county. Summit County has voted Democratic in every presidential election since 1992. The county has a population of approximately 31,017.
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Quick Stats
Demographics
Community Profile
Religious Composition
Source: Religion Census 2020Ancestry Groups
Source: Census ACSTop reported ancestry groups (compared to national average).
Age Distribution
Employment by Industry
Census ACSPresidential Elections
Presidential Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 67.0%(11,762) | 29.9%(5,244) | D+37.1 | R+2.4 |
| 2020 | 68.3%(12,620) | 28.8%(5,319) | D+39.5 | D+12.0 |
| 2016 | 59.1%(9,557) | 31.5%(5,100) | D+27.6 | D+2.9 |
| 2012 | 61.0%(9,347) | 36.4%(5,571) | D+24.7 | R+8.4 |
| 2008 | 65.8%(9,802) | 32.8%(4,883) | D+33.0 | D+12.8 |
| 2004 | 59.3%(8,144) | 39.1%(5,370) | D+20.2 | D+12.9 |
| 2000 | 47.9%(5,304) | 40.6%(4,497) | D+7.3 | R+1.1 |
| 1996 | 47.2%(3,970) | 38.7%(3,261) | D+8.4 | R+4.6 |
| 1992 | 40.0%(3,344) | 26.9%(2,256) | D+13.0 | D+18.3 |
| 1988 | 46.1%(2,595) | 51.4%(2,893) | R+5.3 | D+28.6 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Summit County, CO • 1880–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2014 | 60.3%(6,957) | 35.1%(4,046) | D+25.2 | R+7.4 |
| 2008 | 64.4%(9,275) | 31.8%(4,575) | D+32.6 | D+19.9 |
| 2002 | 54.4%(4,450) | 41.7%(3,408) | D+12.7 | D+5.5 |
| 1996 | 51.5%(4,253) | 44.3%(3,654) | D+7.3 | D+14.9 |
| 1990 | 45.1%(1,873) | 52.8%(2,192) | R+7.7 | D+19.0 |
| 1984 | 36.2%(1,774) | 62.8%(3,081) | R+26.7 | R+3.8 |
| 1978 | 38.3%(1,043) | 61.1%(1,665) | R+22.8 | R+26.9 |
| 1972 | 50.6%(920) | 46.5%(846) | D+4.1 | D+39.3 |
| 1966 | 32.4%(231) | 67.6%(482) | R+35.2 | R+39.1 |
| 1960 | 51.2%(435) | 47.4%(402) | D+3.9 | R+5.1 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 72.7%(10,383) | 25.6%(3,650) | D+47.2 | D+10.2 |
| 2018 | 66.8%(9,499) | 29.8%(4,243) | D+36.9 | D+5.7 |
| 2014 | 63.5%(7,306) | 32.2%(3,705) | D+31.3 | R+23.7 |
| 2010 | 64.1%(6,455) | 9.1%(919) | D+55.0 | D+17.2 |
| 2006 | 67.4%(6,683) | 29.6%(2,939) | D+37.7 | D+51.9 |
| 2002 | 39.7%(3,241) | 53.8%(4,395) | R+14.1 | R+30.2 |
| 1998 | 56.5%(3,630) | 40.4%(2,595) | D+16.1 | R+16.6 |
| 1994 | 64.2%(3,741) | 31.5%(1,837) | D+32.7 | R+15.3 |
| 1990 | 72.6%(2,996) | 24.7%(1,017) | D+48.0 | D+19.0 |
| 1986 | 64.0%(2,610) | 35.1%(1,429) | D+29.0 | R+17.6 |
Source: Official state election returns via MIT Election Data + Science Lab