The legislative power of the State of Michigan is vested in a bicameral (2-chamber) body comprised of a Senate and a House of Representatives. The ... See more Senate consists of 38 members who are elected by the qualified electors of districts having approximately 212,400 to 263,500 residents. Senators are elected at the same time as the governor and serve 4-year terms concurrent with the governor's term of office. Terms for senators begin on January 1, following the November general election.