How to VoteYour Vote Counts
Register to Vote
or
Check your Registration
Voter Eligibility
You must be a U.S. citizen AND 18 years old by the day of the election to register to vote. In order to register to vote in Colorado, you must be a Colorado resident for at least 22 days before the election and you must not be serving a sentence of confinement or detention for a felony conviction (those on probation or parole are eligible to vote).
Registration Deadline
If you meet registration requirements, you may register to vote up to and including on Election Day. To receive a mail ballot, your voter registration must be received by the Boulder County Clerk no later than October 27, 2025.
If you are registering after October 25, 2025 it is recommended that you go to a Voter Service & Polling Center to vote to avoid the risk of mail delays.
Ballot Return Deadline
Your ballot must be returned by 7 pm on November 4th, 2025 in order to be counted. To account for postal delays, DO NOT mail your ballot after October 27, 2025.
Ballots may be returned to any ballot drop box in the State of Colorado as long as they are returned by 7 pm on November 4th, 2025.
If you are voting in person, you must be in line at a Voter Service & Polling Center by 7 pm on November 4, 2025.
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