Michigan's 12th Senate district
Michigan's 12th Senate district is one of 38 districts in the Michigan Senate. It has been represented by Democrat Rosemary Bayer since 2019, succeeding Republican Jim Marleau. Geography. District 12 covers much of central Oakland County in the northern suburbs of Detroit, including Pontiac, Southfield Township, Bloomfield Township, Auburn Hills, Keego Harbor, Orion Township, Oakland Township, Addison Township, Oxford Township, and Independence Township. The district overlaps with Michigan's 8th, 9th, 11th, and 14th congressional districts, and with the 29th, 35th, 40th, 43rd, 45th, and 46th districts of the Michigan House of Representatives. Michigan