A federal judge in Missouri on Tuesday temporarily blocked the state from using its old congressional districts in the November election.

The decision came just after the U.S. Supreme Court declined to hear an appeal from Missouri’s Republican attorney general.

The legal fight began when Missouri’s top court ruled that new districts backed by President Donald Trump could not be used.

That court said the new map was automatically suspended because citizens submitted petition signatures demanding a statewide vote on it.

The U.S. Supreme Court let that ruling stand.

The new districts were used in the August primary, and winners were already certified.

U.S. District Judge Stephen Clark then issued a temporary restraining order, prohibiting Missouri from using anything other than the new Republican-backed districts.

The question of which map will apply in November remains unresolved.

The new map targeted the 5th Congressional District, held by Democratic Rep. Emanuel Cleaver.

It moved parts of Kansas City into neighboring Republican districts and stretched Cleaver’s district into rural areas.

Missouri’s Republican secretary of state had rejected the petition, but the state Supreme Court reversed that decision.

The referendum on the map will now appear on the November ballot as Proposition A.