Maps drawn under unified Republican control of the process have seen , by far, the most challenges, with total of 61 cases contending that GOP-crafted maps were either racially or politically discriminatory (or both).
By contrast, only 11 cases challenged maps drawn under unified Democratic control. In addition, 7 cases challenged maps drawn by bipartisan political commissions, 3 cases – all in Michigan – challenged maps adopted by an independent redistricting commission, and 5 cases – all in Wisconsin – challenged a map put in place by a court.
Regionally, the South accounts for half of all challenges to maps filed to date, with Midwest/Great Plains states accounting for another quarter. With nine cases, fast-growing and rapidly diversifying Texas has seen more challenges to its maps this redistricting cycle than any other state.