The Supreme Court has ruled that states may count postal ballots received after Election Day as long as they were postmarked by Election Day, rejecting the Trump administration’s push to block the practice.
In a closely divided 5–4 decision, the Court upheld a Mississippi law that allows mail-in ballots to be counted if they are postmarked before Election Day and arrive up to five days afterward. The ruling preserves similar systems already used across parts of the United States and marks a significant moment in the ongoing national battle over voting rules.
The decision was a clear political defeat for Donald Trump, who called it a “tremendous loss.” Trump has repeatedly argued that mail-in voting is vulnerable to fraud, despite a lack of evidence supporting widespread abuse.
A Narrow Ruling with Wide National Impact
The Supreme Court’s ruling confirms that states can continue counting late-arriving postal ballots if they meet the postmark deadline, effectively blocking efforts to force all ballots to be received by Election Day. The 5–4 decision upholds a Mississippi law that had permitted the counting of mail-in ballots that were postmarked before election day but arrived up to five days afterward.
The states that allow late-arriving postal ballots are mostly Democratic-leaning, although a few Republican-led jurisdictions also allow a grace period. The ruling could therefore reshape voting deadlines in more than a dozen states that are expected to play a decisive role in determining which party controls Congress after the upcoming midterm elections.
At the center of the majority opinion was Justice Amy Coney Barrett, joined by Chief Justice John Roberts and the Court’s three liberal justices. Justice Barrett wrote that the ruling does not conflict with federal law, which defines Election Day as the “Tuesday next after the 1st Monday in November.”
“The election-day statutes say nothing about ballot receipt, and we cannot add to the words Congress chose,” she wrote.
Sharp Dissent Over Election Integrity and Timing
The Court’s conservative dissent, led by Justice Samuel Alito, warned that allowing ballots to be counted after Election Day undermines the finality of elections. In his written dissent, Justice Alito argued that the “acceptance of these late-arriving ballots effectively postpones the date on which the electorate’s choice is made, and federal law precludes that postponement.”
He also cautioned that “today’s decision leaves open opportunities for voter fraud that may further undermine Americans’ faith in the integrity of this country’s election,” adding that “diverse sources have recognized that mail-in ballots increase the potential for fraud.”
The disagreement highlights a deeper divide within the Court over how strictly Election Day should be interpreted in an era of widespread mail voting.
Trump’s Broader Fight Over Mail Voting
The ruling lands in the middle of Donald Trump’s long-running political campaign against mail-in ballots. Trump has repeatedly claimed without evidence that mail voting contributed to his 2020 election loss to Joe Biden. He has continued to press for tighter federal restrictions on voting access.
In March, Trump signed an executive order aimed at limiting mail-in voting ahead of the midterm elections. Around the same period, he called on lawmakers to pass the Save America Act, which would mandate photo identification and proof of citizenship for voters. The proposal would also significantly restrict mail-in voting, allowing exceptions only for illness, disability, travel, or military deployment.
“There is no excuses for a politician, or otherwise, to be against the above three requirements,” Trump said of the plan. “There is only one reason to oppose: cheating.” Just last week, Trump escalated the standoff further by canceling the signing of a bipartisan housing bill, saying he would only approve it if the Save America Act becomes law.
In March, Trump’s legal team also defended the Republican National Committee’s challenge to Mississippi’s mail ballot deadline before the Supreme Court. The argument centered on an 1845 federal statute defining Election Day as the first Tuesday after the first Monday in November. Republicans argued that ballots must be not only postmarked but physically received by that date.
“Election-day receipt promotes election integrity and voter confidence as much today as it did when Congress passed that law,” the Trump administration told the Court in a legal brief.
Political Fallout and Reactions
Reactions to the ruling broke sharply along partisan lines. Republican National Committee chairman Joe Gruters criticized the decision, saying that “Democrats are inviting chaos at the ballot box by allowing elections to drag on for days and weeks after voters cast their ballots.”
He added that “Republicans are not going to be deterred by this decision and the RNC will keep fighting to have elections end on election day as Americans want.” More than a dozen states currently allow mail-in ballots to be received after Election Day, including Alaska, Texas, Nevada, Virginia, and California. Officials in several of these states welcomed the ruling.
California Governor Gavin Newsom called it a victory for voters, saying, “This is a win for voters, plain and simple. Today’s ruling helps ensure mailed-in-ballots get counted and people’s voices are heard through the democratic process.”
Fraud Claims Versus Verified Data
Despite ongoing political claims about widespread fraud, multiple studies have consistently found that mail voting fraud is extremely rare. One study from the Brookings Institution found an average of just four confirmed cases of mail voting fraud per 10 million votes across the last five U.S. elections.
Even as Trump continues to argue that mail voting undermines election integrity, he himself has used mail-in ballots, including in a Florida special election earlier this year. The White House described that vote as a “non-story,” noting that he has long voted in Florida while residing in Washington.
A Decision That Will Shape Upcoming Elections
While the ruling does not mandate mail-in voting rules nationwide, it preserves the authority of states to accept ballots postmarked by Election Day, even if they arrive days later. That distinction could prove crucial in tightly contested races, where even small numbers of late-counted ballots may influence control of Congress.
As the 2026 midterm landscape takes shape, the decision stands as both a legal clarification and a political flashpoint, cementing the role of mail voting as one of the most contested features of modern American elections.
And once again, the Supreme Court has stepped directly into the center of America’s most sensitive democratic argument: not just how votes are cast, but when they are allowed to count.
