You can register in person at ANY Secretary of State location in Michigan before the voting registration deadline. Bring your driver's license with you. Registering in person secures your right to vote via a mail-in absentee ballot.
View the Secretary of State branch office locator
Mount Pleasant Location
1245 North Mission (just north of Meijer)
Mount Pleasant, MI 48858
The hours of operation are Mondays, Tuesdays, Thursdays, and Fridays from 9:00 a.m. to 5:00 p.m. and Wednesdays from 11:00 a.m. to 7:00 p.m.