The Missouri Supreme Court has upheld a Republican-backed congressional redistricting map, delivering a significant political and legal victory for GOP lawmakers ahead of the 2026 midterm elections. In a narrow 4–3 ruling, the court rejected arguments that Missouri’s constitution only allows congressional maps to be redrawn once every ten years after the U.S. census. Instead, the majority concluded that while lawmakers are required to redraw districts after each census, nothing in the constitution prevents them from doing so more frequently. The court stated that requiring action once a decade does not mean redistricting can happen only once a decade.
The decision preserves a 2025 law known as HB1, passed by Missouri’s Republican-controlled legislature and signed by the governor. The law redraws Missouri’s congressional districts in a way expected to strengthen Republican prospects in at least one more seat. Under the previous post-2020 census map, Republicans held six of Missouri’s eight U.S. House seats, while Democrats controlled two districts centered in St. Louis and Kansas City. The new map is designed to divide the Kansas City-based 5th Congressional District, currently represented by Democrat Emanuel Cleaver, making it more favorable to Republicans. If successful, the delegation could shift from a 6–2 Republican edge to a 7–1 advantage.
Republicans argue the redraw is legal and reflects Missouri’s increasingly conservative political leanings. They also say it is necessary to remain competitive nationally in the fight for control of the U.S. House, where margins remain tight. Critics, however, call the move an aggressive partisan gerrymander designed to weaken Democratic voting strength and secure power through manipulated district boundaries rather than voter persuasion.
The ruling also revealed divisions within the court. The four-justice majority consisted of Republican appointees, while the dissent included two Democratic appointees and one Republican appointee who sided with the minority. The majority emphasized that legislative powers are broad unless explicitly limited by the constitution.
Despite the ruling, legal challenges remain. Opponents are pursuing another lawsuit arguing the map violates Missouri’s constitutional requirement that districts be geographically compact. Civil rights groups, including the NAACP, are also appealing a dismissed case. Meanwhile, Missouri Democrats are attempting to place the map before voters in a statewide referendum, which could overturn or delay implementation.
Timing is critical. Candidate filing for Missouri’s 2026 congressional primaries is already underway, and the primary election is scheduled for August 4. Unless courts or election officials intervene soon, the new Republican-drawn map is likely to govern the next election cycle, potentially helping the GOP gain another House seat.
