Mich. Comp. Laws § 168.54: Candidates for nomination; withdrawal, notice.

Sec. 54.

After the filing of a nominating petition by or in behalf of a proposed candidate for governor, such candidate shall not be permitted to withdraw unless a written notice of withdrawal is served on the secretary of state or his duly authorized agent not later than 4 p.m., eastern standard time, of the third day after the last day for filing such petitions.