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How to vote in Colorado
Key deadlines in Colorado
Voter registration deadlines
- Online: 8 days before Election Day
- By mail: Received by 8 days before Election Day
- In person: Election Day (via same-day registration)
Absentee ballot request deadlines
- By mail: N/A
- In person: N/A
Absentee ballot return deadlines
- By mail: Received by Election Day
- In person: Received by Election Day
Voting dates
- Early voting starts: 15 days before Election Day
- Early voting ends: 1 day before Election Day