CO-4
This candidate list comes from federal campaign filings. We haven't checked it against CO's certified ballot yet — someone on that ballot may be missing here, and someone here may not be on it.
U.S. House · CO-4
This matchup isn't final yet — we haven't confirmed every candidate here against the state's official candidate list.
Open this race →U.S. Senate · Colorado
This matchup isn't final yet — we haven't confirmed every candidate here against the state's official candidate list.
Open this race →Your next step
Election day · Nov 3, 2026
- Early voting opensOct 19, 2026
Every active voter receives a mail ballot. In-person Voter Service and Polling Centers are open statewide from 15 days before election day (Monday October 19) through election day, closed Sundays and the first Saturday; the number of centers varies by county.
- Registration deadlineOct 26, 2026
Register online or by mail by 8 days before election day to receive a mail ballot; in-person same-day registration is available through election day.
- Early voting closesNov 3, 2026
- Election dayNov 3, 2026
This state offers same-day registration.
Your vote plan
until election day · Nov 3, 2026
- Early voting opensOct 19, 2026
Every active voter receives a mail ballot. In-person Voter Service and Polling Centers are open statewide from 15 days before election day (Monday October 19) through election day, closed Sundays and the first Saturday; the number of centers varies by county.
- Registration deadlineOct 26, 2026
Register online or by mail by 8 days before election day to receive a mail ballot; in-person same-day registration is available through election day.
- Early voting closesNov 3, 2026
- Election dayNov 3, 2026
This state offers same-day registration, so you can register when you vote.