Nathaniel Persily, a law professor at Stanford Law School and an expert on redistricting, said he doubted the South Carolina decision itself would vastly change redistricting in the near term because “there aren’t that many cases that look like this.”

Most redistricting cases are brought on the theory that a map minimized the power of minority voters, Persily said. Instead, this case hinged on allegations that legislators moved 30,000 Black residents from one congressional district into another because of their race.