Mich. Comp. Laws § 168.173: State senators and representatives; terms of office.

Sec. 173.

The term of office of state senator and representative shall commence at 12 noon on January 1 next following his election. The term of office of state representative shall be 2 years. The term of office of state senators elected at the general election in 1964 shall be 2 years. The term of office of state senators elected at the general election in 1966 and every fourth year thereafter shall be 4 years.