ballotbymail.org · nonpartisan
Voting by mail in Colorado
Yes. Your ballot comes to you. Every active registered voter is mailed a ballot automatically. Just make sure your registration and mailing address are current.
Key dates
| Register to vote by | Mon, Oct 26 (same-day registration also available) |
| Request your ballot by | Mon, Oct 26 (recommended) |
| Early in-person voting | Mon, Oct 19 – Tue, Nov 3 |
| Mail your ballot by | Tue, Oct 27 (USPS: allow 7 days) |
| Election Day | Tue, Nov 3 |
| ID at the polls | ID requested (photo not necessary). Without one: Provisional ballot with affidavit; counted if the election official confirms your eligibility after Election Day. No return trip with ID is required. |
| Return rule | Received by 7 p.m. on Election Day. Postmarks don't count. |
| Fix a flagged ballot by | Wed, Nov 11 |
| Missed the request deadline? | On Election Day: voters confined in a hospital or at home, voters whose close family member is confined and needs their care, members of a religion forbidding secular activity that day, and first responders, police or health workers who can't leave their post: by Tue, Nov 3, 7 p.m. (voted ballot received). Voters kept from voting in person by an emergency, wildfire, flood or other catastrophe, from Oct. 26 on: by Tue, Nov 3, 7 p.m.. |
| Who can return it for you | Anyone you choose may return it. Anyone may return your ballot, but no one may collect more than 10 other people's ballots in an election. Drop boxes and voter service centers take them until 7 p.m. Election Day. |
Steps
- Confirm your registration and mailing address are current.
- Watch for your ballot in the mail. Most states send them 2 to 3 weeks before Election Day.
- Fill it out in blue or black ink. Sign the envelope where it says to.
- Return it by drop box or in person if you can. Mail it at least a week early if not.
- Track it on your state's tracker until it shows received.
Don't get rejected
- Sign the envelope the way you signed your voter registration or driver's license. Your state compares them.
- Use the secrecy sleeve if one is included, then the return envelope. Don't tape anything.
- Keep the phone and email on your registration current. If there's a problem, that's how they reach you to fix it.
https://www.sos.state.co.us/pubs/elections/FAQs/mailBallotsFAQ.html
https://colorado.ballottrax.net/voter/
ballotbymail.org/state/co
Trouble voting? 866-OUR-VOTE (English) · 888-VE-Y-VOTA (Español) · 888-API-VOTE (Asian languages) · 844-YALLA-US (العربية)
Spot something wrong? We check every report against the state's own page and fix errors as soon as they're reported: fix@ballotbymail.org or ballotbymail.org/report
Scan for the live versionballotbymail.org/state/co — updated daily, with the latest deadlines and any changes to this state's official page.
Rules checked 2026-09-09; deadlines checked 2026-09-09. Sources: NCSL, Vote.org, CEIR, state election offices. The official site wins if anything differs. Free to copy and post.