The U.S. Supreme Court has ruled that states may continue counting mail-in ballots that arrive after Election Day, provided they were postmarked on or before Election Day. The 5-4 decision preserves existing election procedures in multiple states, including California, where election officials have long relied on a postmark-based system to ensure eligible ballots are counted despite postal delivery delays.
The ruling stems from a legal challenge to a Mississippi law but is expected to influence election administration across the country ahead of the 2026 midterm elections.
A decision with nationwide impact
The case centered on whether federal election laws require all ballots to be received by Election Day or simply cast by that date. Writing for the majority, Justice Amy Coney Barrett concluded that federal statutes establish when voters must cast their ballots but do not dictate when election officials must receive or count them.
Barrett was joined by Chief Justice John Roberts and Justices Sonia Sotomayor, Elena Kagan, and Ketanji Brown Jackson. The dissenting opinion, led by Justice Samuel Alito and joined by Justices Clarence Thomas and Neil Gorsuch, argued that counting ballots after Election Day conflicts with federal election law. Justice Brett Kavanaugh joined portions of the dissent.
The ruling overturns a lower court decision that had invalidated Mississippi’s five-day grace period for receiving mailed ballots.
What it means for California
The decision is particularly significant for California, where vote-by-mail has become a central part of the state’s election process. California law allows ballots that are postmarked by Election Day to be counted if they arrive within seven days afterward.
State officials argued that eliminating this grace period would risk disenfranchising voters whose ballots are delayed by the postal system despite being mailed on time. The Supreme Court’s ruling allows California to continue operating under its existing election framework without requiring last-minute procedural changes before the next federal election.
California Attorney General Rob Bonta welcomed the decision, describing it as a recognition of states’ authority to administer elections while protecting eligible voters from circumstances beyond their control.
Political implications
The lawsuit was backed by the Republican National Committee and supported by the Trump administration, which argued that ballots arriving after Election Day should not be counted in federal elections. The case reflected broader national debates over mail voting that have intensified since the 2020 election.
Supporters of the grace periods contend that they help ensure legitimate votes are not discarded because of postal delays, particularly for military personnel, overseas voters, and residents of rural communities.
Looking ahead
The Supreme Court’s ruling provides greater certainty for election officials in states that use postmark-based deadlines for mail ballots. With the legal question now settled, states can move forward with established election procedures rather than redesigning ballot-processing rules just months before voters head to the polls.
The decision also reinforces the longstanding role of states in administering elections, while leaving broader policy debates over mail voting to lawmakers rather than the courts.
