Montana Title 13. Elections § 13-25-305. Certification of electors

(1) the electors will serve as electors unless a vacancy occurs in the office of elector before the end of the meeting required under 13-25-307(1), in which case a substitute elector will fill the vacancy as provided for in 13-25-306; and

(2) if a substitute elector is appointed to fill a vacancy, the governor will submit an amended certificate of ascertainment stating the names on the final list of the state's electors.