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The Supreme Court has blocked a congressional map in Missouri that was designed to benefit Republicans, preventing it from being used in upcoming elections. This decision affects voting districts originally set to be altered following a citizen petition demanding voter approval of the new map drawn at the request of former President Trump. The court's ruling mandates the use of 2022 and 2024 district boundaries despite their use during primary elections earlier this year, citing concerns over potential "electoral chaos" if changes were made now.
Written locally by qwen2.5:14b on 2026-09-25,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
A federal appeals court in Missouri ordered on September 18 that the state must use newly drawn Republican-backed congressional districts for November’s midterm elections, despite previous rulings by both the U.S. Supreme Court and the Missouri Supreme Court blocking their implementation. The new map, favored by former President Donald Trump, aims to benefit Republicans by altering district boundaries and splitting existing ones. This decision follows a long-standing legal battle over redistricting in Missouri, which has seen multiple conflicting court orders affecting voter registration and ballots already printed using the old 2022 map. As a result, the case is likely headed back to the U.S. Supreme Court for a final ruling before November's elections.
Written for “Missouri Redistricting Saga” on 2026-10-05,
grounded in this article and the 26 other(s) covering the same event.
Supreme Court blocks Trump-backed Missouri congressional map
asserted
Court → block → map
In a case watched across the country and as voting begins in the midterm elections, the Supreme Court blocked a congressional map in Missouri that was aimed at netting Republicans another seat in the U.S. House.
asserted
that → watch → House
This is the third time the high court has blocked the redistricting plan that could have helped ousted Democratic Congressman Emanuel Cleaver by increasing the number of Republican voters in his district.
uncertain
that → block → district
The court warned that changing maps now would cause "electoral chaos."
asserted
changing → warn → chaos
The decision requires the state use the same districts provided to voters in 2022 and 2024.
asserted
state → require → 2022
That's even though a different map was used in the primaries there last month.
asserted
map → use → primaries
It comes after weeks of conflicting rulings in state courts and federal courts.
asserted
It → come → courts
Elections officials in Missouri already started mailing some absentee ballots last week using the old districts and some argued it would be too late to change them.
asserted
it → start → them
Missouri lawmakers passed the new map last year at the behest of Trump.
asserted
lawmakers → pass → Trump
It was part of his nationwide strategy to draw more GOP-leaning seats to prevent Republicans from losing the House.
asserted
It → draw → House
A citizen petition makes the redistricting subject to voter approval
Usually, states redistrict at the start of each decade.
asserted
states → make → decade
The redistricting battle set off by Trump ended with the GOP besting the Democrats by tilting about nine or 10 more districts, including Missouri's fifth district, their way.
asserted
GOP → set → district
Republicans currently only hold a few seats advantage in the House.
asserted
Republicans → hold → House
But opponents of the new Missouri map successfully gathered citizen signatures to put it to a vote on the November ballot.
asserted
opponents → gather → ballot
The Missouri Supreme Court ruled earlier this month that the ballot question meant the 2025 GOP-backed map never went into effect and was never law – even though it had been used in the Aug. 4 primaries.
asserted
it → rule → primaries
The state's high court blamed Republican Secretary of State Denny Hoskins for proceeding with the GOP map in the primaries even though it hadn't been approved by voters.
asserted
it → blame → voters
The U.S. Supreme Court in its ruling today backed that up, noting that the state court had said in May - before the primary - that the GOP map would require voter approval before it could be used.
uncertain
it → back → approval
The U.S. Supreme Court had declined on Sept. 10 to intervene in the state court's ruling but allowed the case to continue.
asserted
case → decline → ruling
Simultaneously, Republicans sued in federal court and won backing for the GOP map from a federal judge and then, last week, a federal appeals court.
asserted
Republicans → sue → judge
That sent the case back to the U.S. Supreme Court, which ruled against Republican lawmakers today.
asserted
which → send → lawmakers
In general, Republicans argued that their map should be used because more than a million Missourians cast votes in the primary using the map.
asserted
Missourians → argue → map
Opponents of redistricting argued voters hadn't approved the map and blamed Republican officials for dragging out the process and of trying to force through the new map.
asserted
voters → argue → map
Jason Rosenbaum covers politics for St. Louis Public Radio.
asserted
Rosenbaum → cover → Radio