# What happened
On Thursday morning the U.S. Supreme Court entered a brief unsigned order pausing a federal judge's ruling that would have allowed Missouri to use a new congressional map adopted in 2025. The order, issued without public dissents, came after competing emergency interventions in state and federal court over which map Missouri should use in the November election.
# Why the dispute began
# State-court ruling and immediate effects
On September 3, the Missouri Supreme Court unanimously found the referendum petition valid under the Missouri Constitution and concluded the 2025 map was never in effect and cannot be used unless voters approve it in the November 2026 general election. The Missouri court rejected Hoskins' argument that declining to use the new map would cause confusion or expense, noting the secretary's own delay caused the problem.
# Federal-court responses and the emergency path to the Supreme Court
Less than an hour later, Chief U.S. District Judge Stephen Clark issued a temporary restraining order directing Missouri to use a different post-2022 map for the general election—prompting new litigation. That federal order led Rep. Robert Onder and others to file a federal case saying voters could be harmed because they might have to cast general-election votes for candidates they did not help nominate.
# Immediate practical consequence
With the Supreme Court pausing the federal judge's order and the Missouri Supreme Court having deemed the referendum valid, election officials face tight timelines. Ballots for military and overseas voters must be sent soon. The combination of the high-court pause and the state-court ruling makes it likely Missouri will use the 2022 congressional map in November, not the 2025 map or the map used in the August primary.
# What remains unresolved
The litigation will continue. The Supreme Court's order is a pause while the dispute proceeds, not a final decision on whether the 2025 map can be used. Parties already have made competing arguments about state-law limits on Supreme Court review and about federal constitutional claims. Additional filings and appeals are expected as the cases move forward.
# Bottom line
For now, voters and election officials should plan for the 2026 general election under the 2022 congressional map. The legal battle over whether the 2025 map can take effect will proceed through the courts, but the Supreme Court's pause prevents the immediate implementation of the map that had been intended to change Missouri's House representation.