High Court Blocks Missouri's GOP-Leaning Congressional Map for 2026

The Supreme Court issued an unsigned order that set aside an appellate panel's ruling and restored Missouri's 2022 congressional map. The decision said switching to the 2025 map during an active election would cause electoral chaos. The outcome benefits Democratic Rep. Emanuel Cleaver II, who is now favored for reelection.
Missouri Republicans drew a new congressional map in 2025 during a broader national redistricting push. Under those lines, the GOP would likely have won seven of eight House seats, including Democrat Emanuel Cleaver II’s Kansas City-area district. The district shifted from one Kamala Harris won by 23 points in 2024 to one Donald Trump would have carried by 18, according to Inside Elections.
A citizen petition sought a statewide vote on the 2025 map. Missouri’s Supreme Court then barred its use for November, citing the pending ballot measure, and ordered the 2022 boundaries. A federal judge later said the primary required the 2025 map, but the U.S. Supreme Court paused that decision and sent it back.
The ruling may preserve the current district lines for 2026, affecting candidates, voters, and election administrators in Missouri. Cleaver could benefit, while Republican hopes for an additional House seat may be delayed. Because the decision rests on timing and disruption concerns, it may reduce immediate confusion but leave broader redistricting disputes unresolved. National parties could watch the case as a signal about late-cycle map changes.