Registration
Same-day registration is available
Available during early voting and on Election Day. Check the state site for locations and requirements.
Rule source ↗Your 2026 voting guide November 3
Get ready to vote.
Find your deadline, mail-voting rules, and what to bring to the polls.
Choose where you vote
Select the state where you're registered.
Your state guide
Voting in Colorado.
Mail-ballot cutoff
2days left
Register online, by mail, or through a voter-registration agency by October 26 to be mailed a ballot. In-person registration remains available through Election Day.
Voting by mail
No excuse needed
Mail voting is available without stating an excuse. Check Colorado's site to see whether a ballot is sent automatically or must be requested, and when to return it.
Rule source ↗
At the polls
Bring accepted identification
Check Colorado's accepted IDs and options if you do not have one.
Rule source ↗These are statewide rules. Local voting details can vary, so confirm your polling place and plan with the official Colorado election office.