Michigan Senate

The Michigan Senate is the upper house of the Michigan Legislature. Along with the Michigan House of Representatives, it composes the state legislature, which has powers, roles and duties defined by Article IV of the Michigan Constitution, adopted in 1963. The primary purpose of the Legislature is to enact new laws and amend or repeal existing laws.

The Michigan Senate is composed of 38 members, each elected from a single-member district with a population of between approximately 212,400 to 263,500 residents. Legislative districts are drawn on the basis of population figures, provided by the federal decennial census. In January 2023, Democrats took the majority with 20 seats to Republicans' 18 seats. The Senate chamber is located in the State Capitol building.