Wyo. Stat. § 22-23-1004: Adoption by electors; repealing or amending.

(a) If a majority of the qualified electors voting on the question vote in favor of a proposed initiative ordinance, it is adopted and may not be repealed or amended except by a majority vote of the qualified electors of the municipality.

(b) The municipal governing body may submit to a vote of the people at a special election or a regular municipal, primary or general election, the question of repealing or amending an ordinance adopted by initiative petition.