Wyo. Stat. § 22-17-107: Defense of contested ballot proposition.

(a) A contested ballot proposition shall be defended by the following officers:

(i) Statewide proposition-attorney general;

(ii) Countywide proposition-county attorney;

(iii) Municipal proposition - municipal attorney;

(iv) School or community college district or other special district proposition-the appropriate school board, community college board or special district governing body.