and last updated 2021-06-16 19:40:45-04 GREEN BAY (NBC 26) â If you've never heard of the terms 'redistricting' or 'gerrymandering', you're not alone. "Most folks don't really understand redistricting, how it happens, or when it happens and most times they've just trusted that it happened in a way that benefited them," said Carlene Bechen, the organizing director of the Wisconsin Fair Maps Coalition. Redistricting happens once every ten years when states re-draw their congressional districts after the decennial U.S census. The term 'gerrymandering' refers to the way political parties alter the districts in order to manipulate the outcomes of elections.