The Supreme Court just ruled that mail-in ballots can arrive days after Election Day and still be counted — and four conservative justices say it breaks two centuries of election law.

Story Snapshot

• The Supreme Court ruled 5-4 that states can count mail-in ballots received after Election Day, as long as they are postmarked by Election Day.
• Chief Justice John Roberts broke with fellow conservatives and joined the three liberal justices in the majority opinion.
• Justice Samuel Alito’s dissent argues the ruling contradicts two centuries of election law and the plain meaning of federal election statutes.
• President Trump called the decision “a tremendous loss,” and Congress may still be able to override it through new legislation.

What the Court Actually Decided

On June 29, 2026, the Supreme Court ruled in Watson v. Republican National Committee that federal election laws do not stop states from counting mail-in ballots that arrive after Election Day, provided they were postmarked by that date. The case centered on a Mississippi law that allows absentee ballots to arrive up to five business days after Election Day. The Court upheld that law in a 5-4 decision written by Justice Amy Coney Barrett.

The majority said federal law only requires that voters cast their ballots on Election Day — not that ballots must be received by then. Chief Justice John Roberts joined Barrett, along with Justices Sonia Sotomayor, Elena Kagan, and Ketanji Brown Jackson. The ruling affects roughly 30 states and territories that already allow some form of grace period for mail-in ballots, including protections for military and overseas voters.

The Dissent Makes a Strong Case

Justice Samuel Alito wrote a sharp dissent joined by Justices Clarence Thomas, Neil Gorsuch, and Brett Kavanaugh. Alito argued the ruling “is inconsistent with the terms of the election-day statutes, contemporary election-law principles, two centuries of historical practice, and the case law on the question presented.” That is a serious charge. It means four sitting justices believe the majority didn’t just interpret the law differently — they believe it got it wrong in a way that breaks with long-standing American legal tradition.

Alito’s core argument is straightforward: if ballots keep arriving after Election Day, the people’s choice isn’t truly made on Election Day. That’s a common-sense concern. Most Americans expect election results to be settled on election night, not days later as more envelopes trickle in. The dissent argues the majority’s reading stretches the word “Election Day” far beyond what Congress ever intended when it set that date back in 1845.

What This Means for Election Integrity

The ruling leaves big questions open. The Court did not say whether Congress could pass a law to eliminate these grace periods — Justice Barrett’s opinion left that question untouched. That means the Trump-backed Save America Act and similar bills could still change the rules. President Trump called the decision “a tremendous loss,” and the Republican National Committee (RNC) had led the legal challenge against Mississippi’s law.

Supreme Court Protects Mail Voting & Preserves states authority over ballots
Source: American Civil Liberties Union https://t.co/pQuVjnGvJW

— kym dusek (@KymDusek) July 8, 2026

Conservatives have long worried that mail-in voting creates more chances for ballots to be lost, delayed, or manipulated. No major study has proven that grace periods lead to more fraud, but critics point out that no thorough federal audit has been done either. The RNC argued that counting late ballots makes it harder to finalize results and easier to challenge outcomes. With midterm elections approaching, this ruling means election officials in about 30 states will keep counting ballots for days after Election Day — and that window will remain a source of political tension. Congress now holds the clearest path to changing that.

Sources:

theamericanconservative.com, en.wikipedia.org, facebook.com, brennancenter.org, lwv.org