Montana Title 13. Elections § 13-10-303. Nominations by more than one party

If an individual is nominated by more than one party, the individual shall, not later than 10 days after the election, file written notification with the secretary of state or election administrator indicating the party under which the individual's name is to appear upon the ballot for the general election. If the individual fails to notify the proper officers, the individual's name must appear under the party with whom the declaration for nomination was filed if a declaration was filed. If an individual did not file a declaration or acceptance of nomination and fails to notify the proper officers, the individual's name must appear on the ballot without a party designation.