Colorado uses a vote-by-mail system exclusively, so there is no need for explicit absentee or early voting procedures, except for those who cannot or do not wish to vote by mail. County clerks and recorders automatically send mail ballots to every elector in active status, starting 18 to 22 days before the election. The last day on which a county clerk can mail a ballot to a voter is eight days before the election. However, since electors can register to vote until the polls close at 7 p.m. on Election Day, there are always some voters that cannot vote by mail ballot. Therefore, Colorado law requires county clerks to open and operate polling locations called Voter Service and Polling Centers (VSPCs) starting 15 days before the election through Election Day, excluding Sundays. Eligible voters can visit any VSPC in their county of residence to do any of the following:

• void their mail ballot to vote in person,
• register to vote,
• update an existing voter registration record,
• obtain a mail ballot “over-the-counter,” or
• vote in person on paper ballots or accessible voting devices.

• In-Person: Election Day.
• By Mail: Received 8 days before Election Day.
• Online: 8 days before Election Day.

You can register and cast a ballot up through Election Day by appearing in-person at a Voter Service and Polling Center during the Early Voting period or on Election Day. Contact your Local Election Office if you have any questions.

To register in Colorado you must:

• be a citizen of the United States
• be a resident of Colorado for at least 22 days immediately before the Election in which you intend to vote
• be at least 16 years old, but you must be 18 years of age or older on the date of the election at which you intend to vote
• not be serving a sentence (including parole) for a felony conviction