Colorado's 1st District: 2026 result
Called · unofficial countKiros (D) 78.3%, Peterson (R) 14.1%.
Melat Kiros (Democratic) won Colorado's 1st District in the 3 November 2026 election, with 78.3% of the vote to Christy Peterson's 14.1%, a margin of 64.2 points (195,108 votes). The seat stays Democratic. Count as of November 10 at 6:18 AM EST, not yet certified.
What stands out in CO-1
from the count and past results- In 2024 the district went D+55.0 (DeGette 76.5%, Archuleta 21.6%); in 2026 it went D+64.2, a 9.3-point swing toward Democrats.
- Diana DeGette: incumbent lost renomination.
- Kamala Harris carried this district by 56.0 points in 2024; Kiros's margin was 64.2 points, 8.2 points wider.
- Democratic hold in an open district: Melat Kiros succeeds Diana DeGette, who was not on the ballot.
- Shimon Blau (independent) took 5.5% of the vote.
- One of the widest margins of 2026: Kiros finished 64.2 points ahead of Peterson.
Colorado's 1st District: candidates and votes
Called · unofficial countGeneral election, 3 November 2026 · as of November 10 at 6:18 AM EST
| Candidate | Party | Votes | % |
|---|---|---|---|
| Melat Kiros | Democratic | 238,022 | 78.3 |
| Christy Peterson | Republican | 42,914 | 14.1 |
| Shimon Blau | Independent | 16,606 | 5.5 |
Leading candidates only: the source has not yet published the full results table for this race, so other candidates and the total are missing.
CO-1 in 2024
same district linesHouse election, 5 November 2024
| Candidate | Party | Votes | % |
|---|---|---|---|
| Diana DeGette | Democratic | 264,606 | 76.5 |
| Valdamar Archuleta | Republican | 74,598 | 21.6 |
| Critter Milton | Other | 4,084 | 1.2 |
| Daniel Lutz | Other | 2,351 | 0.7 |
| Total | 345,735 | 100.0 |
2024 presidential vote in the district: Harris 77.0%, Trump 21.0%.
Related races
- Colorado: every 2026 House district, the delegation before and after
- Other districts in Colorado: CO-2, CO-3, CO-4, CO-5, CO-6, CO-7, CO-8
- Colorado Senate race · John Hickenlooper (D)
- Colorado governor's race · Phil Weiser (D)
- Closest House races: MN-1 (0.1), NC-5 (0.1), NC-3 (0.1), TN-4 (0.2), FL-27 (0.4)
- House results 2026: every race
Sources
- Votes and candidates: Wikipedia, 2026 United States House of Representatives elections in Colorado (revision 1384853439, November 10 at 6:18 AM EST), which cites the state election office and AP race calls.
- Race call and incumbent: Wikipedia, 2026 United States House of Representatives elections (revision 1385103391). A race is shown as called only when that article marks a winner.
- 2024 comparison: the 2024 House result from Wikipedia's 2024 House election articles; the 2024 presidential vote in the district from the district's own Wikipedia article.
- Text and figures from Wikipedia are available under CC BY-SA 4.0. Results are unofficial until the state certifies them; this page updates with the source.