The U.S. Supreme Court has blocked Missouri Republicans from using a new congressional map for the third time, preserving the 2022 district lines for the upcoming November elections. This decision averts potential electoral chaos and upholds a previous Missouri Supreme Court ruling, rejecting a Republican-backed 2025 map that would have significantly shifted the partisan balance.
Supreme Court Halts New GOP Map
The U.S. Supreme Court on Friday blocked Missouri Republicans from using a new congressional map in the upcoming November midterm elections, ending a weeks-long legal dispute that threatened to disrupt voting across the state.
The justices upheld a Missouri Supreme Court ruling that the 2022 district lines—currently in use—must remain in place for the general election, rejecting a Republican-backed 2025 map that would have given the GOP a 7-1 advantage over Democrats.
The decision comes after the Supreme Court intervened twice in recent weeks to prevent the 2025 map from taking effect, despite a federal appeals court’s order to reinstate it. The high court’s unsigned opinion emphasized concerns over electoral chaos at such a late stage in the election cycle, stating that switching maps now would disrupt ongoing voting processes.
Immediate Impact: Voting Under 2022 Map
Missouri has already begun sending absentee ballots to military and overseas voters under the 2022 map, which currently divides the state into six Republican-held and two Democratic-held districts. The proposed 2025 map would have eliminated one of the Democratic seats, held by Rep. Emanuel Cleaver, and redrawn Kansas City’s districts to favor Republicans.
The Supreme Court’s ruling means that ballots already printed and mailed under the 2022 map will remain valid, and the general election will proceed without changes to district boundaries. The decision also prevents a last-minute shift in candidate matchups, which could have confused voters who had already cast primary ballots under the 2025 map.
Legal Battle: A Timeline of Conflicting Rulings
The dispute began after Missouri Republicans, at the urging of President Donald Trump, redrew the state’s congressional districts in 2025 to secure an additional seat. The changes were immediately challenged by a group of Missouri voters, who collected enough signatures to trigger a referendum on the new map. Under state law, such a referendum suspends the law until voters decide.
However, the legal process became tangled when Missouri Secretary of State Denny Hoskins, a Republican, declared the referendum invalid on the day of the August primary elections, which were held under the 2025 map. The Missouri Supreme Court later ruled that Hoskins had acted improperly and barred the 2025 map from use in November.
A federal appeals court then overturned the state court’s decision, ordering Missouri to use the 2025 map for the general election. The Supreme Court blocked that order twice before issuing its final ruling on Friday, siding with the Missouri Supreme Court’s interpretation of state law.
Reactions: GOP Disappointment, Democratic Relief
Missouri Governor Mike Kehoe, a Republican, expressed frustration with the Supreme Court’s decision, stating that voters "deserved consistency" and that the ruling would force the state to conduct the general election under a different map than the primary. The Missouri Republican Party had hoped the 2025 map would help them gain an additional House seat in November.
Advocacy groups opposing the gerrymandered map, such as People Not Politicians, hailed the Supreme Court’s decision as a victory for democracy. The group argued that the 2025 map was an attempt to circumvent the will of voters and that the referendum process should have been respected.
Broader Context: National Redistricting Battles
The Missouri dispute is part of a nationwide push by Republicans, encouraged by Trump, to redraw congressional maps in key states ahead of the midterm elections. Democrats in states like California have also pursued redistricting efforts to maintain or expand their advantages. The Supreme Court’s intervention in Missouri reflects broader judicial caution against late-stage changes to election rules that could disenfranchise voters.
Legal experts note that the Supreme Court’s repeated rejections of the 2025 map underscore the judiciary’s reluctance to alter election procedures once voting has begun. The ruling also highlights the complex interplay between state and federal courts in redistricting disputes, particularly when state laws and constitutional principles collide.
What’s Next?
With the Supreme Court’s decision now final, Missouri will proceed with the November election under the 2022 map. The state’s absentee voting period is already underway, and military and overseas ballots have been distributed. The outcome of the midterms could still shift control of the U.S. House, but the Missouri congressional delegation’s composition will remain unchanged for this election cycle.
The legal battle over Missouri’s congressional map may not be entirely settled, however. The referendum on the 2025 map is still scheduled for November, and its outcome could determine whether the new districts take effect in future elections.