Mich. Comp. Laws § 168.164: Candidates for state senator or representative; withdrawal; notice.

Sec. 164.

After the filing of a nominating petition or filing fee by or in behalf of a proposed candidate for the office of state senator or representative, such candidate shall not be permitted to withdraw unless a written notice of withdrawal is served on the official with whom his or her nominating petitions or filing fee were filed, or his or her duly authorized agent, not later than 4 o'clock, eastern standard time, in the afternoon of the third day after the last day for filing such petition.