Missouri’s congressional map fight is headed back toward the U.S. Supreme Court after a federal appeals panel said the state cannot use one set of districts for its August primary and another for the November general election.
The 8th U.S. Circuit Court of Appeals ruled Monday that Missouri should use the Republican-drawn map enacted in 2025. The panel directed a federal district judge to enter a permanent injunction against using the older lines. But it delayed the injunction until 5 p.m. Central on Sept. 28, leaving the 2022 map in place for now while opponents seek emergency relief from the nation’s highest court.
That timing matters because absentee voting is already underway. Local election officials have mailed ballots to military and overseas voters using the 2022 districts, and Missouri law requires absentee ballots to be available to other eligible voters this week. The Missouri Association of County Clerks and Election Authorities told the appeals court that a late switch would be difficult and expensive.
The federal panel’s decision conflicts with a unanimous Missouri Supreme Court ruling issued Sept. 3. In its signed majority opinion, the state court held that a referendum petition challenging the 2025 map was legal, sufficient and timely. Because the petition suspended the new law unless voters approve it, the court said the map adopted after the 2020 census remains operative for the November election. The referendum itself is scheduled for the same November ballot, so voters are being asked to decide whether the 2025 boundaries should eventually take effect.
The immediate dispute is therefore not simply over which map lawmakers prefer. It is a clash between the state court’s interpretation of Missouri’s referendum power and the federal panel’s conclusion that changing district lines between a primary and general election violates the U.S. Constitution.
The 2025 map substantially reshapes the Kansas City-based 5th District represented by Democrat Emanuel Cleaver. Republicans currently hold six of Missouri’s eight U.S. House seats; the revised lines could improve their chance of winning a seventh. The August primary was conducted under those newer boundaries, while the general-election ballots already sent use the older map.
The U.S. Supreme Court has previously paused a lower-court order favoring the 2025 map. That pause remains in effect, according to the latest federal-court account. People Not Politicians, the group behind the referendum, said it will again ask the justices to intervene.
For voters, the practical guidance is unchanged unless a new court order arrives: election officials are administering the contest under the 2022 districts. The Secretary of State’s voting portal remains the official source for absentee-voting rules and local election contacts. A Supreme Court decision before Sept. 28 could still force another change, making the next six days decisive for candidates, clerks and voters.
