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Voting in Colorado
Colorado will hold its 2026 primary elections on June 30. The general election will be held on November 3.
When to Vote
Dates you shouldn’t miss.
Primary Election Dates
All primary elections in Colorado are open to unaffiliated voters.
Voters who are affiliated with a political party must vote in that party's primary, and voters who are unaffiliated may choose which party's primary they'd like to vote in.
Unaffiliated voters who vote by mail will receive ballots from all parties, but must return just one party’s mail ballot. If multiple party's ballots are returned, no vote will be counted.
Jun 30, 2026
Primary election day
Jun 30, 2026
Voter registration deadline (in person, online, by mail)
Jun 23, 2026
Vote by mail request deadline (by mail)
Jun 23, 2026
Vote by mail request deadline (in person)
Jun 30, 2026
Ballot return deadline (must be received)
Jun 22, 2026–Jun 29, 2026
Early voting
General Election Dates
Plan to Vote
Make a plan to vote
How to Vote
How to vote in Colorado
Early Voting
Vote by Mail
Voter ID
Voting FAQs
Can I check to see if I’m registered to vote?
How long does it take to process my voter registration?
How frequently are elections held?
How can I track my absentee ballot status?
Can I register to vote at my student address?
Can I vote without an address?
Can a US citizen without a US address who is living abroad register to vote?
I think my voting rights have been denied. What do I do?