Primary
Primary held June 30, 2026.
Democratic Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Melat Kiros ✓ | 83,855 | 53.2% | |
| Diana DeGette | 62,715 | 39.8% | |
| Wanda James | 11,075 | 7.0% |
Republican Primary
| Candidate | Votes | % | |
|---|---|---|---|
| Christy Peterson ✓ | 15,010 | 100.0% |
Full calendar and every race: Colorado primary guide
Race Overview
Incumbent
Diana DeGette — defeated in primary
Party
Democrat
Current Rating
Open Seat
No
Cook PVI
D+25
Candidates
Christy Peterson Nominee
RepublicanAverage reflects all polls from the last 90 days; table shows the most recent 30 days or the newest 3 polls, whichever is more. How accurate is each pollster? →
No polls in the last 90 days.
Questions About This Race
Is the 2026 CO-01 House race competitive?
No — the expert consensus rates it Safe D for Democrats.
When is the 2026 CO-01 House race decided?
Election Day is Tuesday, November 3, 2026.
How is the PollingSource average calculated?
The PollingSource average is the unweighted mean of every scientific public poll of the race from the last 90 days — we do not exclude pollsters. Each race page lists the individual polls behind the average with pollster, field dates, sample size, and margin of error. Full details: pollingsource.com/methodology.
Race News
No news coverage yet for this race.