Colorado Revised Statutes Title 37. Water and Irrigation § 37-50-131. Election supplies

(1) The secretary of the district shall provide at each polling place ballots or ballot labels, or both, ballot boxes or voting machines, or both, instructions, electors' affidavits, and other materials and supplies required for an election by any law; and the secretary may provide ballots and marking devices suitable for voting and for the votes on the ballots to be counted on electronic vote-tabulating devices.

(2) Election officials may require the execution of an affidavit by any person desiring to vote at any election of the district to evidence such person's qualifications to vote. The affidavit shall be prima facie evidence of the facts it states.