The Supreme Court reversed a lower-court ruling on Monday 27 April 2026 and cleared Texas's PlanC2333 congressional map for use in the 2026 midterms. 1 The map adds up to five Republican seats against the 2024 baseline. The same 6-3 ideological alignment that decided Louisiana v. Callais two days later carried this ruling.
Wire coverage under-reported the pairing. Most outlets treated PlanC2333 as a Texas-specific procedural reversal and Callais as a separate doctrinal earthquake. The two are one institutional action across a forty-eight-hour window: the same six justices opened the redistricting cascade twice, first by clearing a specific Republican-drawn map, then by removing the federal mandate that had constrained others. By the time DeSantis signed Florida on 4 May, the operating premise was settled.
The lower-court challenge that PlanC2333 displaced had been brought under Voting Rights Act Section 2 on majority-minority district grounds. Callais retired that doctrine retroactively for live cases. The Texas reversal therefore doubled as a doctrinal preview of the Wednesday ruling. Texas Attorney General Ken Paxton, who claimed victory on Monday, is now also the Fellowship PAC-backed candidate in the 26 May Senate runoff against John Cornyn ; the same name appears at the centre of two of this fortnight's structural shifts.
