Sep 3 - (Missouri) The Missouri Supreme Court ruled unanimously that the referendum petition filed by opponents of the 2025 congressional map was valid, meaning that HB 1 had never taken effect, and that the 2022 map remains in force for the November 2026 general election. Attorney General Catherine Hanaway has appealed to the U.S. Supreme Court.

Sep 3 - (Maryland) The Maryland Supreme Court reversed two lower court rulings(opens in new tab) that had blocked a proposed constitutional amendment on congressional redistricting from reaching voters, ordering it to be placed on the November ballot as Question 3. 

Aug 19 - (Missouri) A state court declared(opens in new tab) that the 2025 Missouri congressional map can not be subject to referendum, stating the Missouri Constitution's referendum provisions do not apply to reallocating authority over congressional redistricting away from the General Assembly to a referendum process.