The US Supreme Court ruled 6-3 on August 24 that the Trump administration can proceed with an executive order restricting mail-in voting nationwide ahead of the November 2026 midterm elections [1, 2, 3, 4, 5, 6]. The order, issued in March 2026, directs the creation of a "state citizenship list" to ensure mail ballots are only sent to eligible voters on these approved lists [1, 2, 4]. It instructs the US Postal Service (USPS) to restrict mail ballot delivery only to voters appearing on these state-approved mail-in ballot lists [2, 4, 6].
A coalition of 23 mostly Democratic states plus the District of Columbia sued to block the order, arguing that only states and Congress have authority over election rules, not the president [1, 2, 4, 6]. Lower courts blocked implementation in those states and issued nationwide injunctions [1, 2, 4, 6]. However, the Supreme Court lifted a key injunction on August 24, allowing partial enforcement before the midterms [1, 2, 4, 6]. The conservative-liberal split was clear, with the three liberal justices dissenting [2, 3, 4, 6].
US Postal Service officials announced plans to implement the revised mail ballot restrictions immediately after the ruling [6, 4]. However, it remains unclear how much of the order can be fully implemented given the short timeline and states already sending mail ballots [1, 3, 4]. Trump has repeatedly claimed without credible evidence that mail-in voting causes widespread fraud and pushed broader voting changes, including the Save America Act [1, 2, 3, 4, 5].
About 25% of registered Democrats voted by mail in 2024 compared to 20% of Republicans, reflecting mail balloting’s disproportionate use among Democratic voters [1, 2]. Lawyers for the plaintiff states warned, "The consequences of allowing such transformative changes to take effect so close to this fall’s elections would be extreme" [4].
The order’s timeline began in March 2026 with its issuance, followed by a June district court blocking and an August 11 nationwide injunction before the Supreme Court’s key ruling on August 24 [1, 2, 3, 4, 6]. USPS outlined its implementation plans from August 17 to 24 [3, 4]. States and election officials now face a challenge adjusting to the partially allowed restrictions as the November midterms approach.
