The Supreme Court on Monday refused to hear a case brought by Republican officials in Pennsylvania challenging the state Supreme Court’s ability to redraw their congressional redistricting plan.

The state court tossed out the 2011 legislatively enacted plan in 2017, finding that it violated the state Constitution by enhancing the Republican Party’s representation in Congress.

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But in their appeal to the Supreme Court, Pennsylvania officials argued the court exceeded its power in redrawing the maps, which they claimed now favored Democratic voters.

The leaders of the Pennsylvania House and Senate, Michael Turzai and Joseph Scarnati, respectively, said under the plain text of the U.S. Constitution the General Assembly’s 2011 plan is the plan that should govern Pennsylvania’s congressional elections as a matter of federal law.

“Nevertheless, the Pennsylvania Supreme Court invalidated the 2011 Plan and implemented its own solely on newly created state-law grounds,” they said in court briefs.

“But if federal supremacy means anything, it plainly favors legislation founded on federal law over legislation founded solely on state law, not the other way around.”

The justices, however, refused to hear their appeal and provided no explanation for their decision.