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.
Please note, a Social Security number (or last four digits) is not a legal form of identification for voting in person. Additionally, if any form of identification listed below shows your address, that address must be in the state of Colorado to be valid.
The following are acceptable forms of identification:
(a) A valid Colorado driver?s license;
(b) A valid identification card issued by the Department of Revenue in accordance with the requirements of Part 3 of Article 2 of Title 42, C.R.S.;
(c) A valid U.S. passport;
(d) A valid employee identification card with a photograph of the eligible elector issued by any branch, department, agency, or entity of the United States government or of this state, or by any county, municipality, board, authority, or other political subdivision of this state;
(e) A valid pilot?s license issued by the federal aviation administration or other authorized agency of the United States;
(f) A valid U.S. military identification card with a photograph of the eligible elector;
(g) A copy of a current utility bill, bank statement, government check, paycheck, or other government document that shows the name and address of the elector. For example:
(I) A cable bill or telephone bill,
(II) Documentation from a public institution of higher education in Colorado containing at least the name, date of birth, and legal residence address of the student elector,
(III) A paycheck from a government institution or private company,
(IV) A Certificate of Degree of Indian or Alaskan Native Blood, or
(v) A valid identification card issued by a federally recognized tribal government certifying tribal membership.
(h) A valid Medicare or Medicaid card issued by the Centers for Medicare and Medicaid Services (formerly the United States Health Care Financing Administration);
(i) A certified copy of a U.S. birth certificate for the elector issued in the United States;
(j) Certified documentation of naturalization; or
(k) A valid student identification card with a photograph of the eligible elector issued by an institute of higher education in Colorado, as defined in section 23-3.1-102(5), C.R.S.
Section 1-1-104(19.5), C.R.S.; Colorado Secretary of State Election Rule 30.1.6.