Every elective office shall be vacant, except as provided in section 32-561, upon the happening of any one of the following events at any time before the expiration of the term of such office:
(1) Resignation of the incumbent;
(2) Death of the incumbent;
(3) Removal of the incumbent from office;
(4) Decision of a competent tribunal declaring the office of the incumbent vacant;
(5) Incumbent ceasing to be a resident of the state, district, county, township, or precinct in which the duties of his or her office are to be exercised or for which he or she may have been elected;
(6) Failure to elect at an election when there is no incumbent to continue in office until his or her successor is elected and qualified;
(7) Failure of a candidate elected to an office to qualify for such office;
(8) Forfeiture of office as provided by law;
(9) Conviction of a felony or of any public offense involving the violation of the oath of office of the incumbent; or
(10) Incumbent of a high elective office assuming another elective office as provided in subsections
(2) through
(4) of section 32-604.