North Carolina Republicans are appealing a ruling from a federal court that struck down the state’s congressional voting map, taking the matter to the U.S. Supreme Court.

Lawyers for Robert Rucho, the chairman of the North Carolina Senate Redistricting Committee for the 2016 Extra Session, and other state officials filed a notice to appeal the ruling to the Supreme Court on Thursday, two days after the U.S. District Court for the Middle District of North Carolina invalidated the congressional map.

Rucho’s lawyers also asked the U.S. district court to put its ruling on hold while North Carolina lawmakers appeal the case to the high court.

A three-judge panel voided the congressional map drawn by the GOP-controlled state legislature in 2016 and said it constitutes a “partisan” gerrymander. The judges ordered the state’s General Assembly to enact a remedial plan by the end of the month.

The judges also said it plans to appoint a special master to assist with drawing a new map in the event the General Assembly is unable to do so.

North Carolina Republicans had vowed to appeal the ruling to the Supreme Court.

The Supreme Court has already heard oral arguments in a political gerrymandering case out of Wisconsin, Gill v. Whitford. The justices have yet to hand down their ruling.

The high court also announced in December it will consider a challenge to Maryland’s congressional map, which was drawn by Democrats in 2011.