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Colorado Elections Calendar - 2025 and 2026

Primary Election - June 30,2026​

State and Congressional primary elections are held on the last Tuesday in June of even-numbered years to nominate candidates of political parties to be voted for at the succeeding general election.

Poll Hours: 7:00 AM-7:00 PM

June Primary Election Election's Important Dates:
June 8, 2026 Voter Registration Deadline In Person: Submit an application through a voter registration drive no later than 22 days before Election Day..
June 15, 2026 All-Mail voting begins: Every Colorado voter receives a ballot in the mail, but you can still vote in person at a Voter Service and Polling Center if you'd like. In-person voting voting begins at least 7 days before Election Day. Voter service and polling centers must be open 15 days before an election. .
June 22, 2026 Voter Registration Deadline By Mail, Fax or email attachment: Submit an application through the mail, at a voter registration agency, or at a local driver's license examination facility through the 8th day before Election Day.
June 22, 2026 Voter Registration Deadline Online: Colorado enables residents to register through their online voter registration portal. Register to vote or update your voter registration online at www.GoVoteColorado.gov through the 8th day before Election Day.
June 30, 2026 All-Mail voting ends: In-person voting ends on Election Day..
June 30, 2026 Election Day Voter Registration Deadline: Qualified individuals may register to vote at the polling place on election day at all elections starting Early voting period through Election Day. C.R.S.A. § 1-2-217.7 .

General Election - November 3,2026​

November General election is held the Tuesday after the first Monday of the month of November in every even- numbered year.

Poll Hours: 7:00 AM-7:00 PM

November General Election Election's Important Dates:
October 12, 2026 Voter Registration Deadline In Person: Submit an application through a voter registration drive no later than 22 days before Election Day.. Note: Be aware that this date falls on a holiday -Columbus Day, 2nd Monday in October- and may be subject to change.
October 19, 2026 All-Mail voting begins: Every Colorado voter receives a ballot in the mail, but you can still vote in person at a Voter Service and Polling Center if you'd like. In-person voting voting begins at least 7 days before Election Day. Voter service and polling centers must be open 15 days before an election. .
October 26, 2026 Voter Registration Deadline By Mail, Fax or email attachment: Submit an application through the mail, at a voter registration agency, or at a local driver's license examination facility through the 8th day before Election Day.
October 26, 2026 Voter Registration Deadline Online: Colorado enables residents to register through their online voter registration portal. Register to vote or update your voter registration online at www.GoVoteColorado.gov through the 8th day before Election Day.
November 3, 2026 All-Mail voting ends: In-person voting ends on Election Day..
November 3, 2026 Election Day Voter Registration Deadline: Qualified individuals may register to vote at the polling place on election day at all elections starting Early voting period through Election Day. C.R.S.A. § 1-2-217.7 .

NOTES​

This page contains dates and deadlines information on elections occurring in Colorado

Election dates,voter registration deadlines,early voting, absenstee voting, and voting hours apply to statewide elections in most cases. However, Check with your Town Clerk for the hours of voting, and voter registration deadlines as they vary by town. Please be advised that these dates are updated regularly but are subject to scheduling changes at the local level.

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