The Missouri Supreme Court blocked congressional maps backed by Donald Trump from being used in the midterm elections.

The core claim is supported by multiple reports published September 3 and 4, 2026. The Missouri Supreme Court unanimously ruled that the newly drawn congressional districts could not be used for the November midterm elections. The map was backed by President Donald Trump and favored Republicans, making the decision a setback for the party’s effort to gain or retain congressional seats.theguardian.comtheguardian.comMissouri supreme court blocks congressional maps backed by Trump for midtermslatimes.comlatimes.comMissouri high court blocks Trump-backed congressional map, orders it be put to a...+5 more

The court did not permanently invalidate the map. It ordered that Missouri voters decide in a statewide referendum whether to approve or reject it, and the map cannot take effect unless voters approve it. That additional detail qualifies the claim but does not undermine its central assertion that the map was blocked from use in the 2026 midterms. Reports also describe the ruling as applying before November’s election and, according to Al Jazeera, to future elections until voter approval.theguardian.comtheguardian.comMissouri supreme court throws out new congressional maps backed by Trump | US...apnews.comapnews.comMissouri court blocks Trump-backed House map from being used in November+4 more

The wording “maps” is somewhat imprecise because the reports generally refer to one new congressional map or set of congressional districts. The decisive facts remain clear: the decision came from the Missouri Supreme Court, it was unanimous, and the new Trump-backed map will not be used in the November 2026 midterm elections unless the referendum changes its status.latimes.comlatimes.comMissouri high court blocks Trump-backed congressional map, orders it be put to a...nbcnews.comnbcnews.comMissouri Supreme Court rules new GOP-drawn map can’t be used for November...+4 more