Utah Code Title 20A. Election Code § 20A-3a-103. Age requirements for primary elections--17-year-olds may vote

(1) the individual will be 18 years of age on or before the day of the general election that immediately follows the regular primary election, municipal primary election, or presidential primary election;

(2) the individual is registered to vote in accordance with Chapter 2, Voter Registration;

(3) the individual's political party affiliation, or unaffiliated status, allows the individual to vote in the election; and

(4) the individual otherwise complies with the requirements to vote in the primary election.