Mich. Comp. Laws § 31.14

Sec. 14. The legislature, by law, may terminate at any time the authority of the emergency interim successors to exercise the powers and discharge the duties of an office as herein provided. An election to fill any elective vacancy in an office, the powers of which are being exercised and the duties of which are being discharged by an emergency interim successor, shall be held within 1 year after the date of the disaster under which the emergency interim successor succeeded to the powers and duties of the office.