C.R.S. § 1-13-710: Voting twice - penalty.

(1) (a) No voter shall, with the intent of voting more than once in an election:

(I) Cast more than one ballot;

(II) Offer to cast a ballot knowing that a ballot the voter previously returned was received; or

(III) During a federal election, vote in this state and another state.

(b) A voter who violates this subsection (1) upon conviction shall be punished as provided in section 1-13-111.

(2) Nothing in this section prohibits a voter from voting in a special district election as a property owner in accordance with article 13.5 of this title or part 8 of article 1 of title 32, C.R.S.