 Walberg previously served as Lenawee's state representative.Walberg won the district, which includes all of Lenawee County, Jackson County, Hillsdale County, Branch County, and Eaton County, as well as parts of Calhoun County and Washtenaw County, after defeating then-incumbent Democrat Mark Schauer.Schauer had defeated Walberg in the 2008 congressional election, after Walberg's first stint in Congress.