Colorado 4th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | −20.7% |
| 2012 | −27.8% |
| 2016 | −27.4% |
| 2020 | −18.6% |
| 2024 | −18.2% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
| Year | District | Won | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | 4 | R | 42.0%188,249 | 53.6%240,213 | 447,807 |
| 2022 | 4 | R | 36.6%129,619 | 60.9%216,024 | 354,513 |
| 2020 | 4 | R | 36.6%173,945 | 60.1%285,606 | 475,107 |
| 2018 | 4 | R | 39.4%145,544 | 60.6%224,038 | 369,582 |
| 2016 | 4 | R | 31.7%123,642 | 63.5%248,230 | 390,633 |
| 2014 | 4 | R | 29.2%83,727 | 64.7%185,292 | 286,507 |
| 2012 | 4 | R | 36.7%125,800 | 58.4%200,006 | 342,336 |
| 2010 | 4 | R | 41.4%109,249 | 52.5%138,634 | 264,181 |
| 2008 | 4 | D | 56.2%187,347 | 43.8%146,028 | 333,375 |
| 2006 | 4 | R | 43.1%103,748 | 45.6%109,732 | 240,613 |
| 2004 | 4 | R | 44.8%136,812 | 51.0%155,958 | 305,509 |
| 2002 | 4 | R | 41.7%87,499 | 54.9%115,359 | 209,955 |
| 2000 | 4 | R | 0.0%0 | 79.5%209,078 | 263,006 |
| 1998 | 4 | R | 40.7%89,973 | 59.3%131,318 | 221,291 |
| 1996 | 4 | R | 38.0%92,837 | 56.1%137,012 | 244,067 |
| 1994 | 4 | R | 27.7%52,202 | 72.3%136,251 | 188,453 |
| 1992 | 4 | R | 42.2%101,957 | 57.8%139,884 | 241,841 |
| 1990 | 4 | R | 45.9%75,901 | 54.1%89,285 | 165,186 |
| 1988 | 4 | R | 26.9%57,552 | 73.1%156,202 | 213,754 |
| 1986 | 4 | R | 30.2%50,672 | 69.8%117,089 | 167,761 |
| 1984 | 4 | R | 27.4%56,462 | 71.1%146,469 | 205,930 |
| 1982 | 4 | R | 30.2%45,750 | 69.8%105,550 | 151,300 |
| 1980 | 4 | R | 29.5%76,849 | 68.4%178,221 | 260,491 |
| 1978 | 4 | R | 38.8%65,421 | 61.2%103,121 | 168,542 |
| 1976 | 4 | R | 34.8%76,995 | 54.0%119,458 | 221,018 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | D | 55.9%1,397,170 | 41.3%1,031,693 | 2,500,201 |
| 2020 | D | 53.5%1,731,114 | 44.2%1,429,492 | 3,235,790 |
| 2016 | D | 50.0%1,370,710 | 44.3%1,215,318 | 2,743,023 |
| 2014 | R | 46.3%944,203 | 48.2%983,891 | 2,041,020 |
| 2010 | D | 48.1%851,590 | 46.4%822,731 | 1,772,190 |
| 2008 | D | 52.8%1,230,994 | 42.5%990,755 | 2,331,486 |
| 2004 | D | 51.3%1,081,188 | 46.5%980,668 | 2,107,472 |
| 2002 | R | 45.8%648,130 | 50.7%717,893 | 1,415,486 |
| 1998 | R | 35.0%464,754 | 62.5%829,370 | 1,327,235 |
| 1996 | R | 45.7%667,600 | 51.4%750,315 | 1,459,535 |
| 1992 | D | 51.8%803,725 | 42.7%662,893 | 1,552,289 |
| 1990 | R | 41.7%425,746 | 55.7%569,048 | 1,022,027 |
| 1986 | D | 49.9%529,449 | 48.4%512,994 | 1,060,765 |
| 1984 | R | 34.6%449,327 | 64.2%833,821 | 1,297,809 |
| 1980 | D | 50.3%590,501 | 48.7%571,295 | 1,173,142 |
| 1978 | R | 40.3%330,148 | 58.7%480,801 | 819,256 |
Covering the entire eastern third of Colorado plus rural southern counties, CO-4 is one of the largest districts by area in the contiguous U.S., where ranching economies and sparse population density have produced consistent double-digit Republican margins in recent election cycles.
Across the recorded series it reached a Republican high of 27.8 points in 2012. The 2024 margin was 18.2 points.
A population of 721,535, a 80% non-Hispanic-white share, and a median household income of $115,239 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 5 and Congressional District 5.
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Colorado 4th Congressional District. Akashic. https://akashic.app/cd/0804/. Accessed May 20, 2026. License: CC BY 4.0.