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Registration Deadline: Colorado law allows you to register to vote through Election Day. but please note that how you register to vote matters.
The appropriate deadlines are:
- If you register to vote by mail or online at least 8 days before an election conducted by your county clerk and recorder, the clerk will automatically mail you a ballot.
-If you register after the 8th day before an election conducted by your county clerk and recorder, you must visit one of the Voter Service and Polling Centers in your county to get a ballot.
- If you register to vote through a voter registration drive, your application must be submitted no later than 22 days before an election.
- You may register to vote by appearing in-person at a voter service and polling center through Election Day.

Age: Must be 16 years of age, but you must be 18 years of age or older on the date of the election at which you intend to vote
Citizenship: Must be a United States citizen
Residency: Must have resided in Colorado 22 days immediately before the election at which you intend to vote.
Felony Convictions: Are not serving a sentence of confinement, detention, or parole for a felony conviction. For more information see the Voting and Conviction FAQ.
ID Requirements for Voter Registration: You must have a Colorado State driver's license or ID card issued by the Department of Revenue you may register to vote online. If you do not have one of these, you may use the last four digits of your Social Security Number on a paper ballot.

Online: Colorado Online Voter Registration
In person: You can also register in person at:
-A Colorado Department of Motor Vehicle office when you apply for a driver's license, or update your driver's license information.
-Offices that provide public assistance, including offices that provide state funded programs primarily engaged in providing services to persons with disabilities.
-Recruitment offices of the armed forces of the United States.
-Any federal, state, local government, or nongovernment office that chooses to provide voter registration service or applications.
-A voter service and polling center.
-Registering through a voter registration drive
By mail/ in writing: Printable voter registration forms are available on the Secretary of State's website, county clerk and recorder offices, and any federal post office that provides voter registration applications. You may mail, deliver, or scan and email your complete and signed form to your county clerk and recorder’s office.

Mailed forms also accepted at:
Colorado Department of State
Elections Division
1700 Broadway, Suite 200
Denver, CO 80290

Online: Colorado Online Voter Registration Verification
Phone: Contact your local county recorder.

Every voter now receives a mail ballot. If you want to vote at the polls, you can surrender your mail ballot and vote in-person at a voter service and polling center.
Military Voters: Colorado citizens who are either temporarily or permanently overseas and all active military personnel who are absent from Colorado, including their spouses and voting age dependents, are eligible to vote by mail under the Uniformed and Overseas Citizens and Absentee Voting Act (UOCAVA) and Colorado law. As a military or overseas voter with a Colorado driver's license or identification card you can use the online voter registration portal to register to voter, request a ballot and update your registration information. The online form will allow you to indicate your military or overseas classification and your ballot transmission preference.

Every voter now receives a mail ballot upon registering.

Location and time: Your ballot must be received by your county elections office no later than 7:00 p.m. on Election Day. Electors are encouraged to drop off ballots at designated drop off sites or mail their ballots in time to be received by the county clerk before the polls close.

Early voting qualifications: Early voting is available and no excuse is required. For information on early voting locations, please contact your County Clerk and Recorder for more information.

Verifying Registration: Colorado online voter registration verification or contact your local county clerk.
Deciding how to vote:
Polling Place: Contact your local election office
Verifying provisional ballot status: The election judge will give you a receipt when you cast a provisional ballot. This receipt provides information on how you may determine the status of your provisional ballot
Verifying absentee ballot status: Colorado absentee ballot verification
ID requirements at the polls: All voters who vote at the polls must provide identification. If you are voting by mail for the first time, you may also need to provide a photocopy of your identification. Acceptable forms of identification can be found here.

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