Montana Title 2. Government Structure and Administration § 2-16-501. Vacancies created

(1) the death of the incumbent;

(2) a determination pursuant to Title 53, chapter 21, part 1, that the incumbent suffers from a mental disorder and is in need of commitment;

(3) the effective date stipulated in the resignation of the incumbent;

(4) removal of the incumbent from office;

(5) the incumbent's ceasing to be a resident of the state or, if the office is local, of the district, city, county, town, or township for which the incumbent was chosen or appointed or within which the duties of the incumbent's office are required to be discharged;

(6) except as provided in 10-1-1008, absence of the incumbent from the state, without the permission of the legislature, beyond the period allowed by law;

(7) the incumbent's ceasing to discharge the duty of the incumbent's office for the period of 3 consecutive months, except when prevented by sickness, when absent from the state by permission of the legislature, or as provided in 10-1-1008;

(8) conviction of the incumbent of a felony or of an offense involving moral turpitude or a violation of the incumbent's official duties;

(9) the incumbent's refusal or neglect to file the incumbent's official oath or bond within the time prescribed;

(10) the decision of a competent tribunal declaring void the incumbent's election or appointment.