The Supreme Court heard a major fight over whether states can count mail ballots that arrive after Election Day if they were postmarked on time, and conservative justices signaled a willingness to treat Election Day as a hard cutoff. The case grew out of a challenge to a Mississippi law allowing ballots postmarked by Election Day to be counted up to five days later, and it could reshape rules in more than a dozen states. Justices wrestled with plain text and practical consequences, and a ruling this summer could force states to tighten deadlines before the 2026 midterms. Military and overseas ballots remain a separate issue under federal law.
Justice Samuel Alito took a blunt, text-focused tack in oral argument, insisting that words mean something and that Election Day should mean Election Day. “We have lots of phrases that involve two words, the last of which, the second of which is ‘day,’ Labor Day, Memorial Day, George Washington’s birthday, Independence Day, birthday and Election Day, and they’re all particular days,” Alito, an appointee of former President George W. Bush, said. That line of reasoning appealed to conservatives who favor a bright-line rule rather than a rolling deadline.
Alito pushed the point further about the single-day nature of the event. “If we start with that, if I have nothing more to look at than the phrase ‘Election Day,’ I think this is the day in which everything is going to take place, or almost everything.” The question for the court is whether Congress and the Constitution allow states to extend the effective deadline for receipt beyond that single day, even when ballots bear a timely postmark.
The legal fight stems from the Republican National Committee’s challenge to Mississippi’s five-day receipt window for ballots postmarked by Election Day. The 5th Circuit sided with the RNC in 2024, and Mississippi asked the high court to resolve the split. If the Supreme Court upholds the 5th Circuit, the ruling could sweep away similar rules in at least 14 states and Washington, D.C., pushing officials to require ballots to be in hand by the close of polls.
Former U.S. Solicitor General Paul Clement framed the argument in historical and textual terms, stressing the two-part nature of voting: casting and receiving. “All agree that elections for federal office have to end on the day of the election specified by Congress, and all agree that you can’t have an election unless you receive ballots, and there must be some deadline for ballot receipt,” Clement said. “Nonetheless, Mississippi insists that ballots can trickle in days or even weeks after Election Day. That position is wrong as a matter of text, precedent, history and common sense.”
Not every justice embraced a strict cutoff without hesitation. Chief Justice John Roberts raised practical dilemmas about whether defining “day” so rigidly could sweep into other parts of election law, especially early voting. “If ‘day’ includes a period after a particular day of the election, does it include a particular day before the day of the election?” Roberts asked Mississippi Solicitor General Scott Stewart. “Or does your logic require a different consideration?” Those concerns reflect a real tension between textual clarity and administrative realities.
The RNC and allied election integrity groups pressed the case with a straightforward pitch: late-arriving ballots create delay and doubt, and federal law should prevent states from accepting them except where special rules apply. “Today’s oral arguments in Watson v. RNC clearly show where the Supreme Court should come down: state laws that count ballots received after Election Day violate federal law, expose elections to delays, invite fraud, and fuel public doubt in the democratic process,” Jason Snead, executive director of the Honest Elections Project, said. That view is driving the push in Republican circles to lock down receipt deadlines now.
There are practical consequences on the ground: since the 2024 midterms, Republican-controlled legislatures in Kansas, Ohio, Utah and North Dakota have moved to require ballots be received by Election Day. Military and overseas ballots, governed by the Uniformed and Overseas Citizens Absentee Voting Act, are likely to remain an exception. Even with a firm receipt deadline, critics warn states could still face post-election counting work simply because of how ballots are processed and tabulated, but the legal standard the court sets will determine how strict those deadlines must be.
Graduate Student, wife, engaged political and legal writer.