Supreme Court Skeptical of Allowing States to Count Mail Ballots After Election Day

Why It Matters

The U.S. Supreme Court’s conservative justices signaled skepticism toward state laws that count mail-in ballots arriving after Election Day, a ruling that could affect hundreds of thousands of voters across the nation during the 2026 midterm elections and beyond. The case directly challenges whether federal election law overrides state policies that extend grace periods for late-arriving ballots, with implications for voting access nationwide and the timing of election results.

Currently, 14 states allow mail ballots postmarked by Election Day to be counted if they arrive within five business days of the election. A Supreme Court decision against this practice could force these states to change their voting procedures and potentially disenfranchise voters whose ballots arrive after Election Day, even if they mailed them on time.

What Happened

On Monday, the Supreme Court heard oral arguments in a case challenging Mississippi’s mail ballot grace period law. The Republican National Committee is challenging the state’s policy, which permits ballots postmarked on or before Election Day to be counted through the fifth business day following the election.

During oral arguments, several conservative justices expressed concerns about allowing ballots to arrive after polls close. Justice Brett Kavanaugh questioned whether late-arriving ballots undermine public confidence in elections, citing concerns that delays in final vote counts could fuel claims of election fraud or manipulation.

“The longer after Election Day any significant changes in vote totals take place, the greater the risk that the losing side will cry the election has been stolen,” Kavanaugh said, quoting analysis from a New York University law professor.

The RNC argues that a federal law establishing the Tuesday after the first Monday in November as Election Day for federal offices preempts state laws allowing ballots cast by that date but received later to count. Paul Clement, the RNC’s attorney, presented this argument to the justices, contending that federal authority supersedes state election procedures in this matter.

By the Numbers

Fourteen states currently maintain mail ballot grace period laws similar to Mississippi’s five-business-day window. Four Republican-led states eliminated their grace period provisions last year, reflecting a broader national shift away from extended mail voting timelines.

The grace period typically extends voting windows by up to five business days beyond Election Day, affecting potentially hundreds of thousands of ballots during major elections. These delays in final vote tallies have become increasingly controversial in recent election cycles.

Congress is currently considering the SAVE Act, sweeping legislation demanded by President Donald Trump that would impose new voter restrictions nationwide. The measure is unlikely to pass the Senate due to the filibuster rule, which requires 60 votes to advance most legislation.

Zoom Out

The Supreme Court case reflects a broader national debate over mail-in voting practices and election administration. Mail voting has expanded dramatically over the past two decades, particularly since the 2020 presidential election, when pandemic-related concerns drove increased use of absentee ballots.

Republican officials have increasingly challenged mail voting procedures, citing election security and integrity concerns. Meanwhile, voting rights advocates argue that mail ballots provide essential access to the franchise for elderly voters, those with disabilities, and military personnel stationed overseas.

The Supreme Court’s conservative majority has shown skepticism toward voting rights protections in recent years. In 2021, the Court upheld Arizona’s strict voter ID requirements and ballot collection restrictions in rulings that limited federal oversight of state election practices.

Similar challenges to mail voting procedures are pending in other jurisdictions. Arizona, Georgia, and other swing states have faced legal challenges to their absentee ballot policies, reflecting the politicization of election administration nationwide.

What’s Next

The Supreme Court is expected to issue a decision in this case by June 2026, likely before the midterm elections. A ruling against Mississippi’s grace period law could trigger immediate changes across the 14 states that currently maintain similar provisions.

If the Court strikes down grace period laws, affected states would need to implement new ballot counting procedures or pursue legislative changes to comply with the decision. Election administrators in these states are preparing contingency plans for multiple possible outcomes.

Congress will continue debating voting restriction proposals, including the SAVE Act. While federal legislation faces an uncertain path through the Senate, state legislatures may pursue their own restrictions on mail voting regardless of the Supreme Court’s decision in this case.