Colorado 1st Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +52.2% |
| 2012 | +50.4% |
| 2016 | +54.7% |
| 2020 | +61.5% |
| 2024 | +55.9% |
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 | 1 | D | 76.6%264,694 | 21.6%74,598 | 345,735 |
| 2022 | 1 | D | 80.3%226,929 | 17.5%49,530 | 282,616 |
| 2020 | 1 | D | 73.6%331,621 | 23.5%105,955 | 450,290 |
| 2018 | 1 | D | 73.8%272,886 | 23.0%85,207 | 369,693 |
| 2016 | 1 | D | 67.9%257,254 | 27.7%105,030 | 379,036 |
| 2014 | 1 | D | 65.8%183,281 | 29.0%80,682 | 278,494 |
| 2012 | 1 | D | 68.2%237,579 | 26.8%93,217 | 348,210 |
| 2010 | 1 | D | 67.4%140,073 | 28.8%59,747 | 207,751 |
| 2008 | 1 | D | 71.9%203,755 | 23.8%67,345 | 283,246 |
| 2006 | 1 | D | 79.8%129,446 | 0.0%0 | 162,271 |
| 2004 | 1 | D | 73.5%177,077 | 24.3%58,659 | 240,929 |
| 2002 | 1 | D | 66.3%111,718 | 29.6%49,884 | 168,582 |
| 2000 | 1 | D | 68.7%141,831 | 27.3%56,291 | 206,434 |
| 1998 | 1 | D | 66.9%116,628 | 30.1%52,452 | 174,305 |
| 1996 | 1 | D | 56.9%112,631 | 40.2%79,540 | 197,839 |
| 1994 | 1 | D | 60.0%93,123 | 39.9%61,978 | 155,255 |
| 1992 | 1 | D | 68.8%156,629 | 31.2%70,902 | 227,531 |
| 1990 | 1 | D | 63.7%82,176 | 36.3%46,802 | 128,978 |
| 1988 | 1 | D | 69.9%133,922 | 30.1%57,587 | 191,509 |
| 1986 | 1 | D | 68.4%106,113 | 31.6%49,095 | 155,208 |
| 1984 | 1 | D | 62.0%126,348 | 36.3%73,993 | 203,873 |
| 1982 | 1 | D | 60.3%94,969 | 37.4%59,009 | 157,597 |
| 1980 | 1 | D | 59.8%107,364 | 37.7%67,804 | 179,622 |
| 1978 | 1 | D | 61.5%82,742 | 37.0%49,845 | 134,630 |
| 1976 | 1 | D | 53.2%103,037 | 46.2%89,384 | 193,610 |
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 |
Colorado's 1st district covers most of Denver and posts presidential margins rarely seen outside major metro cores — Biden and Harris each carried it by roughly 50 points, reflecting a dense, highly educated, and majority-minority electorate.
Across the recorded series it reached a Democratic high of 61.5 points in 2020. Between 2020 and 2024 the district moved 5.6 points toward the Republican candidate; the 2024 margin was 55.9 points.
A population of 721,015, a 61% non-Hispanic-white share, and a median household income of $94,592 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 37 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 1st Congressional District. Akashic. https://akashic.app/cd/0801/. Accessed May 20, 2026. License: CC BY 4.0.