SCOTUS Rejects Missouri Map, Restores 2022 Districts for Midterms

For election-law practitioners and RegTech compliance teams tracking ballot administration, the Supreme Court's refusal to keep Missouri's new congressional map in force is a case study in the collision between state constitutional referendum rights and the federal judiciary's aversion to late election changes. Justice Brett Kavanaugh's September 2026 order forces candidates who won primaries under the new boundaries to run under the 2022 map — a result the RNC says will disenfranchise hundreds of thousands of voters. The ruling also breaks from the Court's hands-off approach in California and Texas, signaling that state referendum provisions can override partisan redistricting in a way federal courts will respect.

On September 9, 2026, the U.S. Supreme Court declined to keep Missouri's newly enacted congressional map in force, in a ruling that reshapes the state's midterm ballot weeks before the general election. According to The Center Square, whose identical wire report is carried by both sources in this cluster, Justice Brett Kavanaugh — acting on an emergency application from the Eighth Circuit — denied Missouri Secretary of State Denny Hoskins' petition to preserve the new map and instead affirmed the Missouri Supreme Court's holding that the map must be submitted to a statewide referendum before it can take effect. The immediate consequence is that candidates who won Missouri's primary election under the new boundaries must now compete in districts drawn under the 2022 map, a reshuffling election administrators must resolve on a compressed timeline.

“

Justice Brett Kavanaugh's September 2026 order forces candidates who won primaries under the new boundaries to run under the 2022 map — a result the RNC says will disenfranchise hundreds of thousands of voters.

The dispute sits at the intersection of three distinct bodies of law: the state constitutional referendum power, federal election administration, and the Supreme Court's own 'Purcell' caution against late-breaking changes to election rules. Missouri law treats the legislature's redistricting measure as referred legislation, meaning citizens may force a popular vote before the statute becomes effective. The Missouri Supreme Court reasoned that allowing the map to govern an election before that referendum would not merely delay the voters' role but extinguish it. In the challengers' framing, quoted in the reporting, 'enforcing referred legislation before Missourians vote to approve it would not merely undermine their constitutional referendum right but vitiate it altogether.' That logic persuaded the state high court and, at least for emergency purposes, Kavanaugh.

The countervailing harm is real and unusually concrete. Because Missouri conducted its 2026 federal primary under the new map, reverting to the 2022 lines means voters will be assigned to districts whose nominees they had no part in choosing. Lawyers for the Republican National Committee put the number at 'hundreds of thousands of voters,' arguing the order 'renders a completed federal Primary Election utterly pointless.' This is the mirror image of the usual Purcell problem: rather than a court changing rules too close to an election, here a court is declining to prevent a change that had already been operationally implemented in the primary. For election-law practitioners, that inversion matters because it tests whether the Purcell principle protects settled administrative reality or merely resists judicial intervention.

The ruling is also a notable break from the Court's recent redistricting practice. The report notes that the justices previously allowed new congressional maps to take effect in California and Texas, where the litigation posture did not involve a state referendum right of the same character. Kavanaugh's order therefore signals that a validly invoked state constitutional referendum provision can displace an otherwise partisan-favorable map, even at significant administrative cost, and that the Court will not reflexively extend its California-Texas tolerance to every late redistricting challenge. The distinction is unlikely to be a coincidence: Missouri's referendum right gives the voters' challenge a constitutional anchor that pure partisan-gerrymandering claims lack after the Court's earlier refusal to police partisan mapmaking as a justiciable matter.