Redistricting in Wisconsin

Redistricting in Wisconsin is the process by which boundaries are redrawn for municipal wards, Wisconsin State Assembly districts, Wisconsin State Senate districts, and Wisconsin's congressional districts. Redistricting typically occurs—as in other U.S. states—once every decade, usually in the year after the decennial United States census. According to the Wisconsin Constitution, redistricting in Wisconsin follows the regular legislative process, it must be passed by both houses of the Wisconsin Legislature and signed by the Governor of Wisconsin—unless the Legislature has sufficient votes to override a gubernatorial veto. Due to political gridlock, however, it has become common for Wisconsin redistricting to be conducted by courts. The 1982, 1992, and 2002 legislative maps were each created by panels of United States federal judges.

The most recent redistricting occurred in April 2022, as the Wisconsin Supreme Court selected a map after the Legislature and Governor failed to reach consensus. The final decision followed the United States Supreme Court throwing out an earlier March 2022 decision by the Wisconsin Supreme Court. As of December 22, 2023, the Wisconsin Supreme Court has determined that those 2022 legislative maps were unconstitutional and new maps have been ordered drawn for the 2024 Wisconsin elections.