The Supreme Court on Monday appeared ready to side with the Republican National Committee in a case that could end the practice of counting mail-in ballots received days after polls close, a blow to election rules favored by Democrats in more than a dozen states.
During oral arguments in Watson v. Republican National Committee, multiple justices from across the ideological spectrum pressed hard on whether states can stretch the meaning of "Election Day" by accepting ballots that trickle in long after voters have gone home. The case challenges a Mississippi law that gives mail ballots a five-day grace period past Election Day, so long as they carry a timely postmark.
A ruling against Mississippi could reshape ballot-counting rules in 14 states and the District of Columbia ahead of the 2026 midterms, now just eight months away. And it could force 29 states that accept late-arriving military and overseas ballots to rethink those procedures, too. As The Hill reported, the justices' pointed questioning left little doubt about which direction the court is leaning.
Justice Samuel Alito set the tone early. He told the courtroom flatly that the country no longer operates with a single Election Day.
"We don't have Election Day anymore. We have election month, or we have election months."
That line drew on a frustration shared by millions of Americans who watched ballot counting drag on for days, and sometimes weeks, after recent elections. As we previously covered during the oral argument preview, Alito has been vocal about what "day" actually means under federal election law.
Justice Brett Kavanaugh echoed the concern in sharper terms, warning about the corrosive effect late-counted ballots have on public confidence:
"If the apparent winner the morning after the election ends up losing due to late-arriving ballots, charges of a rigged election could explode."
That's not hypothetical. Americans watched exactly that scenario play out in multiple states during the 2020 cycle, and the resulting distrust still poisons the political atmosphere. Sixty percent of respondents in an Honest Elections Project survey said mail-in ballots received after Election Day should not be counted. Among Republicans, that figure hit 80 percent. Even 59 percent of independents agreed.
Paul Clement, arguing for the RNC, framed the case as a matter of plain language. Federal law sets Election Day as the first Tuesday in November. Clement called it "common sense" that an election isn't over until all the ballots are received, and warned that without a hard deadline, nothing stops the count from stretching indefinitely.
"The slippery slope problem on the other side, I don't think there's anything that would stop that."
Solicitor General D. John Sauer, representing the Trump administration, reinforced that point. He argued that upholding Mississippi's law would authorize statutes letting voters mark ballots on Election Day, hand them to private parties, and turn them in three weeks late. The Washington Examiner reported that Justice Neil Gorsuch drove the absurdity home with his own hypothetical:
"How about a time-stamp video showing that I voted on Election Day? Here I am filling out my ballot, and then my brother or maybe some aggregator of ballots brings it in a week or three later, that's got to be OK too, doesn't it?"
Gorsuch, along with Justices Clarence Thomas and Alito, pressed Mississippi's solicitor general on whether defining Election Day as merely the date voters "choose" candidates, rather than the deadline for ballots to arrive, creates unworkable legal problems. The Washington Times noted that the Trump administration formally sided with the RNC against the state.
The left's main counterpunch came through Marc Elias, the prominent Democratic election lawyer who represented the Vet Voice Foundation in the case. Elias argued that the RNC's position would also bar late-arriving military and overseas ballots, a political land mine for Republicans.
Elias wrote that "RNC says military-overseas ballots, too, must be received by election day." The Vet Voice Foundation filed a brief noting that military overseas voters influenced the outcome of the 2000 presidential election between George W. Bush and Al Gore. Justice Sonia Sotomayor picked up that thread, suggesting the nation "should have had another president" if the RNC's reading of the law had been applied back then.
Elias quipped: "Apparently, Gore won."
Clement dismissed the military angle without hesitation, calling it "the reddest of red herrings." And he had a point. Congress has separate authority over military and overseas voting that doesn't depend on the same statute at issue here. The attempt to wrap active-duty service members into a case about Mississippi's pandemic-era grace period was clever advocacy, but several justices didn't seem to buy it.
Not every justice lined up neatly behind the RNC. Chief Justice John Roberts seemed uncertain that banning late-arriving mail ballots could be squared with the widespread practice of early voting. He told Sauer bluntly that distinguishing between the two was harder than the government made it sound.
"It seems to me you're not saying anything other than, 'That's different.'"
Justice Ketanji Brown Jackson raised a different objection, institutional rather than substantive. She noted that Congress has already introduced the Make Elections Great Again Act, a bill that would require mail-in ballots to arrive by the time polls close. Jackson told Sauer directly: "You want the court to decide this case instead of having Congress do it."
That's a fair separation-of-powers question. But Congress hasn't acted. The bill sits in legislative limbo. And meanwhile, states keep counting ballots that show up days after Election Day, feeding the very distrust Kavanaugh described. Courts sometimes must act when Congress won't, and this looks like one of those moments.
The 5th Circuit already ruled in the RNC's favor, finding that federal law establishing a single Election Day overrides Mississippi's extended receipt deadline, as Fox News detailed. A coalition of conservative election-integrity groups filed an amicus brief urging the Supreme Court to uphold that ruling. Jason Snead, executive director of the Honest Elections Project, told Fox News Digital that "counting ballots that are received after Election Day unnecessarily damages public trust in election outcomes, delays results, and violates the law."
On the other side, local election officials filed a friend-of-the-court brief arguing that mail-in ballots play a "critical role" in conducting elections and that the processes involved "require care and take time." The brief warned that "shortening the timeline in which amici must perform these tasks would make it much harder for them to smoothly and efficiently administer elections."
Clement had a ready answer: "You would give them plenty of time." He expressed confidence that states could make any necessary changes before November.
Mississippi's law started as a pandemic-era measure. Officials later made it permanent. That trajectory is familiar, emergency powers quietly becoming the new baseline. The question before the court is whether the plain text of federal law allows that drift, or whether Election Day still means what it says.
The court is expected to rule by the end of June. As we noted when the case was first headed for oral arguments, the implications reach well beyond Mississippi. Competitive Senate races in states like Texas, which also allows a grace period, could be shaped by whatever the justices decide. And the broader pattern, a Supreme Court increasingly willing to rebuke lower courts and enforce statutory text, suggests the RNC has strong odds here.
Forty-two percent of Democrats say late-arriving ballots shouldn't count. That's nearly half of the party whose lawyers spent Monday defending the practice. When even your own voters doubt the policy, maybe the policy is the problem.
Election Day is a day. Not a suggestion, not a window, not a rolling deadline. If the court says so out loud this summer, it will be stating what most Americans already believe.
