Utah Code § 20A-2-307: County clerks' instructions to election judges.

(1) Each county clerk shall instruct election judges to allow a voter to vote a regular ballot if:

(a) the voter has moved from one address within a county to another address within the same county; and

(b) the voter affirms the change of address orally or in writing before the election judges.

(2) Each county clerk shall instruct election judges to allow an individual to vote a provisional ballot if:

(a) the individual is not registered to vote, but is otherwise legally entitled to vote under Section 20A-2-207;

(b) the voter's name does not appear on the official register; or

(c) the voter is challenged as provided in Section 20A-3a-803.