House districts / Colorado
Colorado's 4th congressional district
CO-4. Same lines in 2026 as in 2022.
Fundraising
- Eileen Laubacher Das of Oct 14, 2026Raised $13.7mSpent $11.9m · Cash $1.8m
- Lauren Boebert Ras of Oct 14, 2026Raised $1.2mSpent $1.1m · Cash $274k
4 other 2026 candidates filed reports (primary candidates). 6 other candidates have not filed.
Federal Election Commission, candidate totals, public domain.
President in this district
PollCheck calculation from precinct returns on the 2026 lines (method).
| Year | Democrat | Republican | Other | Margin |
|---|---|---|---|---|
| 2024 | Harris 39.6% | Trump 57.9% | 2.5% | R+18.2 |
| 2020 | Biden 39.5% | Trump 58.0% | 2.5% | R+18.6 |
| 2016 | Clinton 32.1% | Trump 59.6% | 8.3% | R+27.4 |
Who lives here
| Measure | This district | US |
|---|---|---|
| People | ||
| Population | 756,186 | |
| Adults (18+) | 579,739 | |
| Citizens, % of adults | 96.0% | 92.1% |
| Age, % of adults | ||
| 18 to 29 | 17.7% | 20.3% |
| 30 to 44 | 27.9% | 25.9% |
| 45 to 64 | 34.5% | 31.8% |
| 65 and over | 20.0% | 22.0% |
| Race and Hispanic origin, % of residents | ||
| White | 74.3% | 57.4% |
| Black | 1.8% | 11.9% |
| Hispanic | 15.0% | 19.3% |
| Asian | 3.6% | 5.9% |
| Other or more than one | 5.3% | 5.5% |
| Education and income | ||
| Bachelor's degree or higher, % of 25+ | 48.1% | 35.7% |
| Median household income | $115,239 | $80,734 |
American Community Survey 2020-2024 5-year estimates for this district. The tick marks the US figure.
Winning margin
Results since 1976
| Year | Winner | Share | Runner-up | Share | Margin |
|---|---|---|---|---|---|
| Current lines (2022 on) seat count changed from 7 to 8 after the census | |||||
| 2024 | Lauren Boebert Republican | 53.6% | Trisha Calvarese Democrat others 4.3% | 42.0% | R+11.6 |
| 2022 | Ken Buck Republican | 60.9% | Ike McCorkle Democrat others 2.5% | 36.6% | R+24.4 |
| Earlier lines, elections 2012-2020 post-census redistricting | |||||
| 2020 | Ken Buck Republican | 60.1% | Ike McCorkle Democrat others 3.3% | 36.6% | R+23.5 |
| 2018 | Ken Buck Republican | 60.6% | Karen McCormick Democrat | 39.4% | R+21.2 |
| 2016 | Ken Buck Republican | 63.5% | Bob Seay Democrat others 4.8% | 31.6% | R+31.9 |
| 2014 | Ken Buck Republican | 64.7% | Vic Meyers Democrat others 6.1% | 29.2% | R+35.5 |
| 2012 | Cory Gardner Republican | 58.4% | Brandon Shaffer Democrat others 4.8% | 36.8% | R+21.7 |
| Earlier lines, elections 2002-2010 seat count changed from 6 to 7 after the census | |||||
| 2010 | Cory Gardner Republican | 52.5% | Betsy Markey Democrat others 6.2% | 41.4% | R+11.1 |
| 2008 | Betsy Markey Democrat | 56.2% | Marilyn N. Musgrave Republican | 43.8% | D+12.4 |
| 2006 | Marilyn N. Musgrave Republican | 45.6% | Angie Paccione Democrat others 11.3% | 43.1% | R+2.5 |
| 2004 | Marilyn N. Musgrave Republican | 51.0% | Stan Matsunaka Democrat others 4.2% | 44.8% | R+6.3 |
| 2002 | Marilyn N. Musgrave Republican | 54.9% | Stan Matsunaka Democrat others 3.4% | 41.7% | R+13.3 |
| Earlier lines, elections 1992-2000 post-census redistricting | |||||
| 2000 | Bob Schaffer Republican | 79.5% | Dan Sewell Ward Natural law others 13.0% | 7.5% | R+72.0 |
| 1998 | Bob Schaffer Republican | 59.3% | Susan Kirkpatrick Democrat | 40.7% | R+18.7 |
| 1996 | Bob Schaffer Republican | 56.1% | Guy Keller Democrat others 5.8% | 38.0% | R+18.1 |
| 1994 | Wayne Allard Republican | 72.3% | Cathy Kipp Democrat | 27.7% | R+44.6 |
| 1992 | Wayne Allard Republican | 57.8% | Tom Redder Democrat | 42.2% | R+15.7 |
| Earlier lines, elections 1982-1990 seat count changed from 5 to 6 after the census | |||||
| 1990 | Wayne Allard Republican | 54.0% | Richard R. (Dick) Bond Democrat | 46.0% | R+8.1 |
| 1988 | Hank Brown Republican | 73.1% | Charles S. Vigil Democrat | 26.9% | R+46.2 |
| 1986 | Hank Brown Republican | 69.8% | David Sprague Democrat | 30.2% | R+39.6 |
| 1984 | Hank Brown Republican | 71.1% | Mary Fagan Bates Democrat others 1.5% | 27.4% | R+43.7 |
| 1982 | Hank Brown Republican | 69.8% | Charles L. (Bud) Bishopp Democrat | 30.2% | R+39.5 |
| Earlier lines, elections 1976-1980 | |||||
| 1980 | Hank Brown Republican | 68.4% | Polly Baca Barragan Democrat others 2.1% | 29.5% | R+38.9 |
| 1978 | James P. (Jim) Johnson Republican | 61.2% | Morgan Smith Democrat | 38.8% | R+22.4 |
| 1976 | James P. (Jim) Johnson Republican | 54.0% | Daniel M. Ogden, Jr. Democrat others 11.1% | 34.8% | R+19.2 |
More on Colorado
Other Colorado districts
About these results
Shares count all candidate votes, including write-ins, with a candidate's votes on several party lines added together. Each result is on the lines in force at the time. Mid-decade redraws before 2016 may be unmarked.
President in this district: 2016 and 2020 are estimates: precinct votes are split between districts by census block.
Counties only partly inside the district show the 2024 result for that part; estimates are labelled.
Margin chart: winner minus runner-up. Gaps are unopposed races; dashed lines are new district lines.
Sources
Results: MIT Election Data and Science Lab, U.S. House 1976-2016 (doi:10.7910/DVN/IG0UN2, CC0; via MEDSL/constituency-returns), and Clerk of the US House, Statistics of the Presidential and Congressional Election 2018-2024 (public domain).
Presidential results: PollCheck calculation from MIT Election Data and Science Lab 2024 precinct returns (doi:10.7910/DVN/XDJYKC, doi:10.7910/DVN/USBYR4, CC0; state totals doi:10.7910/DVN/42MVDX, CC0) and Voting and Election Science Team 2016 and 2020 precinct results and shapes (doi:10.7910/DVN/NH5S2I, doi:10.7910/DVN/K7760H, CC BY 4.0), with US Census Bureau 2020 block populations and block equivalency files (public domain). Official figures: Texas Legislative Council (2024 on the 2026 lines); Louisiana, New Jersey, California and Washington election offices (county totals). Certified results transcribed by Wikipedia (CC BY-SA 4.0): Maine 2024 by district: 2024 United States presidential election in Maine (revision 1382530995); Indiana county totals: 2024 United States presidential election in Indiana (revision 1382505975); Oregon county totals: 2024 United States presidential election in Oregon (revision 1382605746).
District lines: US Census Bureau TIGER/Line 2026 (120th Congress) and 2025 cartographic boundary files (119th Congress), public domain.
Members: unitedstates/congress-legislators (CC0).
Counties: US Census Bureau 2024 cartographic boundary file (public domain); 2024 county results summed from the same MEDSL precinct returns, with the official county totals above.
Demographics: US Census Bureau, American Community Survey 5-year estimates 2020-2024 (public domain).
2028 candidates: Federal Election Commission (public domain).
Photos: official portraits, public domain (US government); see Photo credits.
PollCheck US. Data through November 5, 2026. Photo credits