As of 2015, a map of Michigan's voting districts shows the state's 14 congressional districts and 148 state legislative districts. Each of the 14 congressional districts elects a congressperson to the U.S. House of Representatives, and each state legislative district sends a representative to the state legislature.
Michigan's 148 state legislative districts include 38 state Senate and 110 state House of Representatives districts. State senators are elected every four years, while state representatives are elected every two years. The state of Michigan places term limits on both senators and representatives. State senators may only be elected to the Senate twice, serving no more than eight years in total, while state representatives may be elected to the House of Representatives three times, serving no more than six years in total.
Following the 2010 U.S. census, Michigan lost one seat in the U.S. House of Representatives due to declining population. This required the state legislature to redraw the state's congressional district boundaries into 14 new districts in a process known as redistricting. Because each U.S. congressional district is constitutionally required to have approximately the same population, Michigan's 14 congressional districts cover geographic areas of varying sizes. For example, the First Congressional District covers the Upper Peninsula's huge but sparsely populated area, while the 14th Congressional District covers the much smaller but more densely populated area including eastern Detroit.