Utah Code 20A-7-602: Need at least five sponsors for referendum petition.

    20A-7-602.   Local referendum process -- Application procedures.
     (1) Persons wishing to circulate a referendum petition shall file an application with the local clerk.
     (2) The application shall contain:
     (a) the name and residence address of at least five sponsors of the referendum petition;
     (b) a certification indicating that each of the sponsors:
     (i) is a resident of Utah; and
     (ii) (A) if the referendum challenges a county ordinance, has voted in a regular general election in Utah within the last three years; or
     (B) if the referendum challenges a municipal ordinance, has voted in a regular municipal election in Utah within the last three years;
     (c) the signature of each of the sponsors, attested to by a notary public; and
     (d) one copy of the law.