The group fighting Missouri’s 2025 congressional map has taken emergency legal action as it prepares to return to the U.S. Supreme Court. It is escalating a dispute that could determine not only which districts Missourians use in November but also how states across the country handle congressional maps that change between primary and general elections.
People Not Politicians Missouri moved to halt a federal appeals court ruling Tuesday night requiring the state to use its 2025 congressional map while the group seeks Supreme Court review. The 8th U.S. Circuit Court of Appeals ruled Monday that Missouri cannot conduct its November general election under different congressional districts than those used for its August primary. The court stayed enforcement of its ruling until 5 p.m. on Sept. 28 to allow time for Supreme Court review.
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What happens next in Missouri may not stay in Missouri. The legal battle could give the U.S. Supreme Court an opportunity to clarify whether states can use different congressional maps for primary and general elections. A decision could affect how congressional elections are conducted nationwide and establish new rules for future redistricting disputes.
Jayne Woods, an associate professor of law at the University of Missouri, said the implications could extend beyond Missouri if the courts ultimately conclude that using different congressional maps for a primary and general election violates the U.S. Constitution.
“If they determine that having a different map at a primary and a general is a violation of the United States Constitution, that can’t happen anywhere ever again,” Woods said.
Woods later clarified that the 8th Circuit tied its decision on Article I, Section 2 of the U.S. Constitution, which governs the election of members of the U.S. House. The court concluded that the constitutional right to participate in choosing a member of Congress requires continuity in a congressional district throughout the primary and general election process. That means the ruling would not necessarily apply to state legislative elections, Woods said. But if the 8th Circuit’s reasoning stands, it could prevent states from using different congressional maps for the primary and general election in future federal elections.
People Not Politicians seeks emergency relief
People Not Politicians’ latest move came after the 8th Circuit concluded that Missouri’s plan to use its 2022 congressional districts in November after conducting the August primary under the 2025 districts violates the Constitution. The appeals court ordered a federal judge to block the state from using any congressional map other than the 2025 map for the Nov. 3 election. But that order is on hold until Sept. 28, specifically allowing time for opponents to seek relief from the Supreme Court.
People Not Politicians argues the appeals court’s decision conflicts with the Supreme Court’s Sept. 10 order that put the 2025 map on hold while the 8th Circuit considered the case and while the Supreme Court considered any timely petition seeking review.
Richard von Glahn, executive director of People Not Politicians Missouri, said the timing threatens to disrupt an election that is already underway.
“Ballots have been printed, and Missourians have already voted. Thousands more will vote before this order seeks to take effect,” von Glahn said in a statement. “Officials should stop wasting taxpayers’ money on pointless legal action and instead focus on administering our elections.”
The group’s emergency action adds another chapter to a case that has moved repeatedly between state and federal courts.
How Missouri got here
As Straight Arrow News previously reported, the dispute centers on congressional districts approved by Missouri lawmakers in 2025. The new map significantly reshaped the Kansas City-area 5th Congressional District represented by Democratic Rep. Emanuel Cleaver and could give Republicans an opportunity to compete for seven of the state’s eight U.S. House seats.
People Not Politicians responded by collecting more than 300,000 signatures for a referendum seeking to put the map before Missouri voters. According to the group’s earlier Supreme Court filing, the petitions were submitted in December 2025. Secretary of State Denny Hoskins waited until Aug. 4 to reject the petition. Aug. 4 was the day of Missouri’s congressional primary. The Missouri Supreme Court ultimately ruled the referendum was valid and that the 2025 map had not taken effect, requiring the state to return to its 2022 congressional districts. But by then, Missouri had already conducted its primary under the 2025 boundaries. That created the constitutional issue now at the center of the federal case.
The 8th Circuit said Monday it was not overturning the Missouri Supreme Court’s interpretation of state referendum law. Instead, it addressed a separate federal question: whether Missouri could use one set of congressional districts for its primary and another for the general election.
“This Court holds that Missouri’s current plan to use the 2022 map in the November 2026 general election violates the Constitution,” the appeals court wrote. “Only use of the 2025 map complies with the Constitution and federal law.”
The Supreme Court has already intervened twice. Justice Brett Kavanaugh first declined to block the Missouri Supreme Court’s decision requiring use of the 2022 districts. After U.S. District Judge Stephen Clark separately ordered Missouri to use the 2025 map, the full Supreme Court stepped in Sept. 10 and stayed Clark’s order while the case proceeded through the 8th Circuit and potentially returned to the Supreme Court.
Voting is already underway
The legal fight is no longer happening before an election. It is happening during one. Military and overseas ballots using the 2022 districts were mailed Sept. 18, and absentee voting began Tuesday. Woods said some military and overseas voters had already returned their ballots Tuesday morning.
If Missouri ultimately changes maps, voters whose congressional districts changed could face complications because ballots already cast under the 2022 boundaries would not reflect the congressional contests assigned under the 2025 districts. County election officials are already warning voters about the uncertainty surrounding congressional races as the litigation continues. The timing puts another Supreme Court election doctrine in the spotlight: the Purcell principle, which generally cautions federal courts against changing election rules close to an election.
Woods said the case could give the Supreme Court an opportunity to explain how that principle applies when courts are confronted with competing congressional maps after voting has begun.
“I imagine it might behoove the U.S. Supreme Court, even if we are already past our election at some point, to kind of clarify what the Purcell principle means in this context,” Woods said.
Why the case could matter nationwide
The broader question reaches beyond Missouri because states have different procedures for dealing with congressional and legislative maps, including disputes that arise after primary elections. The 8th Circuit’s decision says the Constitution does not permit Missouri to use one congressional map for its primary and another for its general election.
If that principle is ultimately adopted by the Supreme Court, Woods said, it could limit what other states can do when district boundaries are successfully challenged after a primary. The issue becomes particularly complicated when state law says the original map was never legally in effect.
“It seems weird to me that the right answer could be that we are forced to use a map that isn’t actually law in our state,” Woods said.
Under that reasoning, she said, a map improperly used for a primary could effectively have to remain in place for the general election to avoid violating the federal Constitution. The case also arrives amid a national wave of mid-decade redistricting, with states controlled by both parties pursuing new congressional boundaries ahead of the 2026 midterm elections. As Straight Arrow News previously reported, Missouri is among a group of states where congressional maps have become part of the broader fight over control of the closely divided U.S. House.
For Missouri election officials, the immediate question is which map they should use Nov. 3. For other states, the more consequential question could be whether the Supreme Court establishes a constitutional rule governing what happens when a congressional map changes between a primary and general election. Woods said the conflicting rulings and approaching election deadlines make additional Supreme Court guidance increasingly important.
“Otherwise, it’s just going to be pure chaos here, if not already,” Woods said.
