Colorado ballots must arrive by 7 p.m. Tuesday, Nov. 3, 2026. A postmark is not enough. For Eagle County voters, that makes the return method as important as the date: mail it early, or use an official ballot drop box or voter service and polling center.
The Colorado County Clerks Association recommends not mailing a ballot after Monday, Oct. 26. That is practical delivery guidance, not a separate legal deadline. After that date, choose a county-controlled drop box or bring the ballot to a voting center.
What is the last day to mail my Colorado ballot?
There is no later postmark that substitutes for arrival. The ballot must reach election officials by the Election Day deadline. The clerks’ association says to send it early and not use the mail after Oct. 26. If it is already later than that, use an official drop box or a voter service and polling center.
When do Eagle County drop boxes close?
Official ballot drop boxes close at 7 p.m. Nov. 3. You may use an official Colorado county ballot drop box, even outside your home county, according to the clerks’ association. Use the state’s voting-location finder to confirm a current location before leaving home.
For one verified local example, the Town of Avon lists a 24-hour box outside Avon Town Hall, 100 Mikaela Way. It says the box remains available through 7 p.m. Election Day. Other locations and hours can differ; check the official finder.
Can I hand in my ballot at a voting center?
Yes. A voter service and polling center can accept a completed ballot during its operating hours. It can also help with registration, address changes, replacement ballots, accessible voting, and in-person voting. The Town of Avon lists the Edwards Field House, 410 Miller Ranch Road, as an Eagle County center. Its posted Election Day hours are 7 a.m. to 7 p.m.; confirm hours for any earlier visit.
What if I have not registered yet?
The Secretary of State’s 2026 calendar says Monday, Oct. 26 is the last day to submit a voter registration application and still receive a mail ballot for this election. That is not the last day to register. Eligible voters can register in person at a voter service and polling center through Election Day. Check your registration first at GoVoteColorado.gov.
What if the deadline is close and I need help?
Do not rely on a mailbox pickup or a third-party location that you cannot verify. Find an official drop box or voting center through the state portal. If your ballot is missing or damaged, visit a voter service and polling center and ask about a replacement. Eagle County Elections can be reached at 970-328-8715 or elections@eaglecounty.us.
Quick answers
Does a Nov. 3 postmark count?
No. For ordinary domestic ballots, election officials must receive the ballot by 7 p.m. Election Day.
Is Oct. 26 the legal mail-ballot deadline?
No. It is the Colorado County Clerks Association’s recommendation for when to stop using mail delivery. The legal deadline is receipt by 7 p.m. Nov. 3.
Can I still vote if I missed the mail-ballot registration cutoff?
Eligible voters can register and vote in person at a voter service and polling center, including on Election Day.
After returning your ballot, follow our Colorado ballot-tracking guide to check its status.
Illustration: AI-generated editorial artwork. It does not depict a specific official drop box.
