Colorado

Voting Guide.

Colorado mails a ballot to every active registered voter. Same-day registration is available at any Voter Service and Polling Center through Election Day.

Last verified · June 15, 2026

Make your plan to vote today.

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Key details for your state.

Registration deadline
8 days before Election Day to register by mail and still receive a ballot in the mail. After that, register and vote in person at a Voter Service and Polling Center through Election Day.
Early voting
Voter Service and Polling Centers open 15 days before Election Day. Ballots are mailed to all active voters starting 22 days before.
Absentee / mail-in
All active registered voters automatically receive a mail ballot. Ballots must be RECEIVED by 7:00 PM Election Day (postmark does not count).
ID requirements
ID required when voting in person. Mail ballots use signature verification — no ID needed to return.
Election Day hours
Voter Service and Polling Centers open 7:00 AM to 7:00 PM Mountain Time. If you are in line at 7:00 PM, you can vote.

Extra info:

  • Every active voter is automatically mailed a ballot — keep your address current.
  • Drop boxes are available 24/7 from 22 days before Election Day until 7:00 PM Election Day.
  • Same-day registration and voting is available at any Voter Service and Polling Center.

All information on this page comes from the Colorado Secretary of State's official election website. Confirm details there before voting:

https://www.sos.state.co.us/pubs/elections/main.html ↗