Michigan Compiled Laws, Chapter 141. Municipal Financing § 141.72

Sec. 2. Whenever the board of supervisors of any county shall by resolution vote in favor of levying a tax or borrowing money in excess of the amounts prescribed in section 1 of this act,  1 the question of levying or borrowing such sum shall be submitted to the electors of the county at the general November election, or the biennial spring election, or at an election to be held on the first Monday in April subsequent to the passage of such resolution by the board of supervisors. A copy of such resolution shall be served upon the sheriff of the county by the county clerk. It shall be the duty of the sheriff at least 20 days prior to the date of the election, at which such question shall be submitted to the electors, to cause to be delivered to the township clerk in each township, and to the chairman of the board of election inspectors in each ward in any city in his county, a notice in writing that at such election there will be submitted to the electors of such county the question of raising the amount prescribed in the resolution passed by the board of supervisors, and cause the same to be published in 1 or more newspapers printed and circulating in said county, if 1 be printed and circulated therein, at least 2 consecutive weeks before said election.