13-13-602. Fail-safe and provisional voting by mail. (1) To ensure the election administrator has information sufficient to determine the elector's eligibility to vote, an elector voting by mail may enclose in the outer signature envelope, together with the voted ballot in the secrecy envelope, a copy of a current and valid photo identification with the elector's name or a copy of a current utility bill, bank statement, paycheck, notice of confirmation of voter registration issued pursuant to 13-2-207, government check, or other government document that shows the elector's name and current address or other information necessary to determine the elector's eligibility to vote.
(2) The elector's ballot must be handled as a provisional ballot under 13-15-107 if:
(a) a provisionally registered elector voting by mail does not enclose with the ballot the information described in subsection (1);
(b) the information provided under subsection (1) is invalid or insufficient to verify the elector's eligibility; or
(c) the elector's name does not appear on the precinct register.