Federal and state courts in Missouri are at odds over which congressional map the Show-Me State will use for the November election, creating a legal mess that could cost Republicans a seat in the House of Representatives.

The dispute is over whether a map drawn by the state legislature in 2022 or a map drawn in 2025 will be used for the midterm elections, even though the 2025 map was used for the August primaries. The 2022 map, used for the 2022 and 2024 elections, has produced a 6-2 Republican-Democratic split for Missouri’s congressional delegation, while the map passed by state lawmakers in 2025 would likely shift the delegation to a 7-1 Republican-Democratic split.