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Can I vote 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.
- Voter registrationMon, Oct 261 day
In person at the election office until Tue, Nov 3. Same-day registration is available in person.
- Request byMon, Oct 261 day
Address changes must be in 8 days before Election Day.
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. Deadline: Tue, Nov 3, 7 p.m. (voted ballot received). Emergency Replacement Ballot Application (Form 600), emailed, faxed or hand-delivered by a representative to the county clerk; the ballot is handed to your representative or faxed; return to a voter service center, drop box, the clerk, or the online return portal. source
- Voters kept from voting in person by an emergency, wildfire, flood or other catastrophe, from Oct. 26 on. Deadline: Tue, Nov 3, 7 p.m.. Same Form 600. source
- NextFill it in, sign the envelope, and get it in the mail byTue, Oct 272 days
USPS says allow 7 days. Your ballot must be received by Tue, Nov 3. After this date, use a drop box or return it in person.
- Returning it:
Received by 7 p.m. on Election Day. Postmarks don't count.
Dropping it off? Drop boxes are widely available here, and using one skips the mail entirely. Colorado drop boxes and vote centers.
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. source
- Election DayTue, Nov 39 days
If your ballot gets flaggedDeadline: Wed, Nov 11 · 17 days
If your ballot was flagged
- Read the letter, email or text from your county. It says what's wrong.
- Return the cure form from the county's letter, or fix it online at GoVoteColorado.gov, by 11:59 p.m. Nov. 11 (8 days after Election Day). Missing signature, mismatched signature and missing ID can all be fixed. Nov. 11 is a holiday and the state's FAQ says the deadline then moves a day, but its 2026 calendar still says Nov. 11 -- don't count on the extra day. Deadline: Wed, Nov 11 · 17 days
- Call your county election office. You can say:
Hi, I voted by mail and my ballot was flagged. What do I need to do to fix it, and by when? Can I do it today?
Trouble voting? Free, nonpartisan hotline: 866-OUR-VOTE · 888-VE-Y-VOTA · 888-API-VOTE · 844-YALLA-US
Where are you with your ballot?
Where are you with your ballot?
Will your ballot count in Colorado?
Will your ballot count in Colorado?
- Is this your first time voting by mail?
- Have you moved since you last voted?
- Has your signature changed much since you registered?
Why ballots get rejected in Colorado, and how to avoid it
- 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.
Voting in person insteadpolling place, early voting, ID
Open now through Tue, Nov 3. Locations and hours
Bring some ID. A utility bill, bank statement, or paycheck with your name and address usually works, and there's a fallback if you have none.
Accepted: CO driver's license/ID, US passport, government employee photo ID, military ID, Medicare/Medicaid card, tribal ID, CO college photo ID, or a current utility bill, bank statement, paycheck or government document with name and address (digital copies accepted; address if shown must be in Colorado) Without one: Provisional ballot with affidavit; counted if the election official confirms your eligibility after Election Day. No return trip with ID is required.
More about your statepermanent list, counting, alerts
Colorado can start processing mail ballots 15 days before Election Day, so most results come in on election night. Results are certified Tue, Nov 24.
Watching the numbers? Your state publishes a running count of mail ballots requested and returned: Colorado's ballot return data
- Military or overseas. You're covered by federal law (UOCAVA), which usually gives you longer deadlines and electronic delivery. Use the Federal Post Card Application to register and request a ballot in one step. If your ballot doesn't arrive, the Federal Write-In Absentee Ballot is your backup. FVAP.gov
- College student. You can register at your school address or your family's, not both. If you're registered back home and away at school, request a mail ballot from home early; campus mail is slow. Some states require a specific reason for students to vote absentee, so check your state's rule above. Student voter guide
- Disability or need help marking a ballot. Every state must offer an accessible way to vote. Most have an accessible mail-ballot option you can mark on a screen reader or your own device, and all allow a person of your choice (not your employer or union rep) to assist. Ask your county election office for the accessible absentee ballot. If illness, a hospital stay or a disability keeps you from the polls AFTER the request deadline, most states still have a way to get you a ballot: see "Missed the request deadline?" under your state's dates, and "Who can return it for you" for whether a family member or helper may carry it back. EAC: voters with disabilities
- Moved recently. Your registration is tied to your address. If you moved within your state, update it before the registration deadline; if you've moved across state lines, register in the new state. Moved after the deadline? Many states let you vote at your old precinct one last time or update in person; call your county. vote.gov
- Past felony conviction. Rules vary widely: some states restore rights automatically on release, others after probation or parole, a few require a separate process. Don't assume you can't vote. Check your state before the registration deadline. NCSL: restoration of voting rights
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Verified against the official page 2026-09-11. Rule checked 2026-09-09. Deadlines checked 2026-09-09. Request deadlines are "received by," not postmarked. The official site wins if anything differs. Spot something wrong? We check every report against the state's own page and fix errors as soon as they're reported. Email fix@ballotbymail.org or use the report form.