Mich. Comp. Laws § 200.251
Precinct No. 2 of Leland township and Precinct No. 2 of Glen Arbor township of Leelanau county are hereby made a part of Precinct No. 1 of their respective townships for the purpose of this election law. The registration books and other election records of Precinct No. 2 of Leland township, Leelanau county, consisting of North Manitou Island, and of Precinct No. 2 of Glen Arbor township, Leelanau county, consisting of South Manitou Island, shall become a part of the records of Precinct No. 1 of their respective townships. Registered electors of North Manitou Island may vote in Precinct No. 1 of Leland township, Leelanau county, and registered electors of South Manitou Island may vote in Precinct No. 1 of Glen Arbor township, Leelanau county, either in person or by absent voter's ballot.
MCL 200.251