The U.S. Supreme Court is likely to be drawn back quickly into the battle over partisan gerrymandering following the invalidation of North Carolina’s congressional redistricting map by a three-judge district court.

The ruling Monday was the second time the district court struck down the 2016 redistricting plan as an unconstitutional partisan gerrymander. North Carolina lawmakers, represented by Kirkland & Ellis partner Paul Clement, had appealed the first ruling to the Supreme Court last term. The justices in June sent the North Carolina cases back to the trial court for consideration in light of their ruling last term in Gill v. Whitford, a partisan gerrymander challenge to Wisconsin’s legislative redistricting plan.