The battle over Missouri’s Republican-backed congressional map has landed back before the U.S. Supreme Court, with opponents seeking to block a federal ruling that cleared the way for the new boundaries to be used in November’s elections.
The emergency appeal was filed on Wednesday by People Not Politicians and other challengers, shortly after U.S. District Judge Stephen Clark issued an order requiring Missouri to use the redrawn map for the upcoming congressional elections.
The latest development has added another layer to an already tangled legal dispute. Just a day earlier, the Supreme Court had declined to revive the same map after Missouri’s highest court halted its implementation pending a statewide referendum.
The Missouri Supreme Court unanimously ruled on September 3 that a referendum effort challenging the redistricting plan was valid. As a result, the new congressional boundaries were not supposed to take effect unless voters approved them.
That decision now stands in apparent tension with Clark’s federal order.
The Republican-backed map was adopted in 2025 and dramatically reshaped Missouri’s congressional districts. Among its most consequential changes was the elimination of the Kansas City-area district represented for years by Democratic Congressman Emanuel Cleaver.
The redrawing was part of a broader Republican effort, supported by President Donald Trump, to reshape congressional districts in several states in a way that could improve Republican prospects.
The stakes are particularly high nationally. Republicans currently control the U.S. House by a narrow margin, making even a small number of seats potentially important to control of the chamber.
The Missouri dispute began after People Not Politicians, a coalition that includes Republicans, Democrats and independents, gathered enough signatures to seek a referendum on the redistricting legislation.
State officials initially rejected the petition, arguing that the constitutional provision allowing voters to challenge legislation through a ballot measure did not apply to congressional redistricting.
The Missouri Supreme Court disagreed.
Its seven-member bench, which includes five judges appointed by Republican governors, concluded that the referendum petition was lawful, sufficient and submitted on time. The court consequently blocked the new map from taking effect before voters had an opportunity to decide its fate.
Missouri Republican Congressman Bob Onder and other supporters of the map subsequently turned to federal court, asking that the Republican-drawn boundaries be restored.
Clark sided with that position in Tuesday’s order. He determined that the 2025 map had to be used for the November election because those boundaries were already in place during Missouri’s August 4 congressional primary.
The ruling immediately created a clash between the federal court and Missouri’s highest court.
Secretary of State Denny Hoskins, Missouri’s chief election official, responded by instructing local election authorities to proceed with the 2025 congressional map.
That move prompted the Missouri Supreme Court to escalate the dispute further. The state court said it could consider holding Hoskins in contempt if it concludes that his actions violated its September 3 order.
Hoskins has been directed to appear before the state Supreme Court on September 10.
With the federal and state rulings pointing in different directions, Missouri’s congressional boundaries remain at the center of an increasingly urgent legal battle just weeks before voters head to the polls.
