Any person appointed to fill a vacancy, before entering upon the duties of the office, must give a bond corresponding in substance and form with the bond required of the officer originally elected or appointed, as herein provided.
Mont. Code Ann. § 2-9-503, under General Provisions Related to Official Bonds.
Mont. Code Ann. § 2-9-503
Any person appointed to fill a vacancy, before entering upon the duties of the office, must give a bond corresponding in substance and form with the bond required of the officer originally elected or appointed, as herein provided.