State challenge to Secretary of State’s determination of insufficiency for referendum signatures, which determined that the referendum would violate the state and federal constitutions.

On Aug. 19, 2026, the trial court rejected the challenge, finding that congressional maps in Missouri are not subject to referendum.

On Sept. 3, 2026, the Missouri Supreme Court reversed, declaring that congressional maps in Missouri are subject to referendum under state law, and that this referendum had enough signatures to qualify for the November ballot.  As a result, the mid-decade congressional map was unlawfully used during the primaries, and the 2022 map will be used in the 2026 general election.  Voters at that 2026 general election will have the ability to approve or reject the mid-decade map for the future.  (On Sept. 8, 2026, the U.S. Supreme Court declined to stay the state supreme court decision.)