Colorado | Voting Guide


Registration Deadlines and Election Dates

Voter Registration Deadline: By mail or online: 8 days before Election Day

  • You may register in person on Election Day.

  • All active voters receive a ballot by mail.

  • If you register after the 8th day before an election you must visit a Voter Service and Polling Center in your county to get a ballot.



  • Presidential Primary Election Registration Deadline: February 24

  • Presidential Primary Election: March 3

  • Primary Election (Other Offices) Registration Deadline: June 22

  • Primary Election (Other Offices): June 30

  • General Election Registration Deadline: October 26

  • General Election: November 3

Official Election Websites
Register at School or Home

Students have a choice about where to register to vote.


Students attending college may register at their campus address or choose to remain registered or register at their permanent or home address.


You may only be registered and vote in one location.

What Type of ID Do I Need to Register?

If you register online, you must provide a valid Colorado driver’s license or ID number. If you register by mail, Colorado’s voter registration form asks for either your Colorado driver’s license or ID number, or the last four digits of your Social Security number. Be sure to provide one of these numbers if you have it.

What Type of ID Do I Need to Vote?

The following are acceptable forms of ID:

  • A valid Colorado driver’s license or state identification card

  • A valid U.S. passport

  • A valid U.S. government or Colorado government employee identification card with a photograph

  • A valid pilot’s license issued by the Federal Aviation Administration or other authorized U.S. agency

  • A valid U.S. military identification card with a photograph

  • A copy of a current (within the last 60 days) utility bill, bank statement, government check, paycheck, or other government document that shows your name and address

  • A certificate of Degree of Indian or Alaskan Native Blood

  • A valid Medicare or Medicaid card

  • A certified copy of your U.S. birth certificate

  • Certified documentation of naturalization

  • A valid student ID card with a photograph issued by a Colorado institute of higher education

  • A valid veteran ID card with a photograph issued by the U.S. Department of Veterans Affairs

  • A valid ID card issued by a federally recognized tribal government certifying tribal membership


If you show ID that has an address on it, the address must be in Colorado, but it does not have to match your voter registration.


If you try to register to vote on Election Day, but do not have ID, you may vote a provisional ballot.

Where Do I Vote?

Make a plan. Look up your voting site and hours at:

How Can I Vote?

By Mail

  •  If you are an active voter or you registered  to vote at least 8 days prior to Election Day, you will receive a mail ballot.

  • Local election officials will mail ballots to active voters no later than 18 days before the election.

  • Completed ballots must be received by the county clerk’s office or dropped off at a Voter Service and Polling Center or designated drop-off location by 7 p.m. on Election Day.


Early In-Person

  • Colorado voters may go to a Voter Service and Polling Center before Election Day and drop off their mail ballot or request a replacement ballot and cast it.

  • For a list of Voter Service and Polling Centers and their times of operation, contact your county election office or check your registration information at

  • You must have a valid ID to vote in person.


Election Day

  • You must have a valid ID to vote in person.

  • Voting sites will be open from 7 a.m. to 7 p.m. on Election Day. If you are in line by the closing time then you must be allowed to vote.

Common Questions/Concerns

Registering to Vote Does Not Affect Your:

  • Federal Financial Aid

    • Where you register to vote will not affect federal financial aid such as Pell Grants, Perkins or Stafford loans, or your dependency status for FAFSA

  • Status as a Dependent on Your Parents’ Taxes

    • Being registered to vote at a different address from your parents does not prevent them from claiming you as a dependent on their taxes

  • Tuition Status

    • Being deemed out-of-state for tuition purposes does not prevent you from choosing to register to vote in your campus community


Will registering to vote in Colorado affect my driver’s license or car registration?

  • Yes. If you register to vote in Colorado, you are also a resident for motor vehicle registration purposes and will need to obtain a Colorado driver’s license and register your car with the Colorado Division of Motor Vehicles.

Fair Elections Center and Campus Vote Project intend the information contained herein to be used only as a general guide. This document should not be used as a substitute for consultation with a licensed Colorado legal professional.


Last updated October 2019

Campus Vote Project is a project of Fair Elections Center

(202) 331-0114  

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