Mich. Comp. Laws § 168.6

Sec. 6. As used in this act: (a) "Permanent mail ballot voter" means a registered elector who submits a signed absent voter ballot application to receive an absent voter ballot by mail for all future elections and whose application has been verified. (b) "Presidential primary ballot selection form" means a form, as prescribed by the secretary of state, that a permanent mail ballot voter can use to select, or use to change a prior selection of, the political party ballot that the permanent mail ballot voter wishes to receive for a presidential primary election.