Mont. Code Ann. § 76-15-703
Voter approval of proposed regulations required
76-15-703 . Voter approval of proposed regulations required. The supervisors shall not have authority to enact such proposed ordinance into law unless a majority of the votes cast in such referendum shall have been cast for approval of the proposed ordinance. The approval of the proposed ordinance by a majority of the votes cast in such referendum shall not be deemed to require the supervisors to enact such proposed ordinance into law.