Missouri voters will decide on Nov. 3 whether future elections should use the redrawn 2025 congressional map. The 2022 map will be used for that election after the state high court's ruling stood through three U.S. Supreme Court actions.

The Missouri Supreme Court ruled the referendum could go before voters, and the U.S. Supreme Court kept that decision in place three times, so the 2022 map will be used for the Nov. 3 election. On Nov. 3, Missouri voters will decide whether future elections should use the redrawn 2025 congressional map, which carves up Kansas City to benefit Republicans.

Missouri officials used the 2025 Republican-leaning map to determine congressional districts in the August primary election. The new House map had already been used in the August primaries, and Republicans had hoped it could help them win an additional seat.

Some Republicans have called on the Missouri legislature to attempt another round of redistricting in 2027, though it is unclear whether there is enough support.