Colorado (CO)

Eligibility

Age: 18 (may pre-register at 16)

ID Requirements

To Register: CO driver's license or state ID number, or last 4 of SSN. If neither, check the box on the form; marked "ID deficient" and must provide acceptable ID when first voting (passport, military ID, birth certificate, CO ID, or government document). Online registration requires a CO DL or state ID.

To Vote: ID required for in-person voting; mail ballots verified by signature

Registration Methods

• Online: Residents can submit a voter registration application electronically through the state's website, rather than by mail or in person.
• Mail: Residents can register to vote by completing a paper registration form and submitting it by mail to the appropriate election office.
• In Person: Residents can register to vote by visiting a designated government office, such as a county clerk's office or DMV, and completing a registration form on site.

Early Voting ⓘ

A period before Election Day during which voters can cast their ballots in person at designated polling locations. The length of the early voting period varies by state.

All elections conducted primarily by mail. Ballot drop-offs and vote centers available starting 22 days before election.

Mail-In / Absentee Voting ⓘ

A voting method where ballots are automatically mailed to all registered voters without requiring a specific request. States that use this approach conduct elections primarily or entirely by mail.

All-mail election state. Every registered voter automatically receives a mail ballot.

Felony Voting Rules ⓘ

State laws governing whether and when people with felony convictions can vote. Policies range from no restrictions to permanent disenfranchisement, with most states restoring rights at some point after sentencing.

Rights restored upon release from incarceration. People on parole and probation may vote.

Documentation Needed

• Colorado DL or ID number
• Last 4 of SSN if no CO ID

Additional Notes

Colorado is a vote-by-mail state; all voters receive ballots by mail.

Sources

• Colorado Official Election Website
• Vote.org - Colorado