Supreme Court Blocks Missouri From Using New GOP-Favored Congressional Map

The Supreme Court has blocked Missouri from using a newly drawn congressional map favored by Republicans for the 2026 midterm elections. The map, approved by the Missouri Legislature and Governor Mike Kehoe in September 2025, aimed to shift the state’s congressional delegation from six Republican and two Democratic seats to seven Republican and one Democratic seat. A group of organizers petitioned for a statewide referendum on the new maps, which the Missouri Supreme Court authorized, citing the state constitution’s allowance for referendums on acts of the General Assembly. State officials then appealed to the Supreme Court after Justice Brett Kavanaugh initially denied a request to pause the state court’s ruling, and a lower court ordered the use of the 2025 map. The Supreme Court’s decision pauses that order pending further appeals.

Republican Secretary of State Denny Hoskins argued the state constitution did not authorize a referendum on congressional redistricting plans. The state held its primary elections under the new map before the legal challenges fully played out, raising concerns about voters potentially running in different districts for the general election. The Supreme Court did not provide an explanation for its decision, and no dissents were noted. The order pauses the lower court ruling until the 8th U.S. Circuit Court of Appeals and potentially the Supreme Court, rule on the matter.

NBC News reported that the Supreme Court rejected the attempt to use the map, which would have likely eliminated the seat of a Democratic incumbent. The Federalist detailed the legal back-and-forth, including the petition process and court rulings. CBS News and The New York Times also reported on the Supreme Court’s action.

Where they differ

• The Federalist provided the most detailed account of the legal process, including the timeline of appeals and the arguments made by state officials.
• NBC News highlighted the potential impact on a Democratic incumbent's seat, framing the decision as a setback for Republicans.
• PBS Newshour included the decision alongside news of August being the hottest month on record and a 9/11 memorial event, while other sources focused solely on the court ruling.

What is not yet known

• The ultimate outcome of the appeals process in the 8th Circuit and before the Supreme Court remains unresolved.
• The specific reasoning behind the Supreme Court’s decision to pause the lower court ruling was not disclosed.

Background

• The Missouri Legislature and Governor Mike Kehoe approved a new congressional map in September 2025, aiming to increase the number of Republican-held seats from six to seven [Fact Refinery, 2026-09-10].
• A group of organizers initiated a petition for a statewide referendum on the new maps, which the Missouri Supreme Court authorized, citing the state constitution’s allowance for referendums on acts of the General Assembly [Fact Refinery, 2026-09-10].
• The legal battle over the map has involved multiple court rulings, including decisions from the Missouri Supreme Court, a federal judge, and appeals to the U.S. Supreme Court [Fact Refinery, 2026-09-09].
• Missouri held its primary elections under the new map before the legal challenges were fully resolved, creating potential issues for voters in the general election [Fact Refinery, 2026-09-10].
• The Missouri constitution allows for referendums on acts of the General Assembly [background knowledge].

Our reading

Our reading is that the Supreme Court’s decision, while silent in its reasoning, prioritizes the established process of allowing voter referendums on legislative acts, even in the context of congressional redistricting. The repeated appeals and reversals suggest a high degree of contention surrounding the map, and the Court’s pause of the lower court ruling indicates a willingness to allow the appeals process to play out fully. The fact that the state held primaries under the contested map adds complexity, but the Court appears to be focusing on the legality of the map itself rather than the logistical challenges of an election already underway.

What to watch

• The ruling of the 8th U.S. Circuit Court of Appeals on the legality of the map [article text].
• Any further rulings or statements from the Supreme Court regarding the appeal [article text].
• The final decision on whether the 2022 or 2025 map will be used for the November midterm elections [article text].

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