A group of election integrity organizations is pushing the Supreme Court to uphold a ruling that requires mail-in ballots to be received by Election Day, arguing this aligns with federal law.

Core Conflict and Legal Challenge
A group of election integrity organizations is urging the Supreme Court to uphold a ruling that mandates mail-in ballots be received by Election Day. This legal challenge centers on Mississippi’s five-day grace period for ballots postmarked by Election Day.
“Counting ballots that are received after Election Day unnecessarily damages public trust in election outcomes, delays results, and violates the law.”
Jason Snead, Honest Elections Project
The coalition contends that this grace period violates federal law, which they argue requires all ballots to be in election officials’ hands by the time polls close.
Background and Historical Context
The case arises from a lawsuit initiated by the Republican National Committee (RNC) challenging Mississippi’s practice of counting mail ballots received up to five business days after Election Day if postmarked by that day.

Snead said a favorable ruling from the Supreme Court would “protect the rights of voters and the integrity of the democratic process, and ensure that it is easy to vote but hard to cheat in future elections.”
Jason Snead
Historically, the Supreme Court ruled in Foster v. Love (2008) that the ‘final act of selection’ in elections must occur on Election Day. This precedent is central to the argument that mail-in ballot receipt should also align with this date.
Vote Math and Political Strategy
Should the Supreme Court uphold the 5th Circuit’s ruling, it could invalidate similar postmark-based deadlines in 14 states, significantly impacting the upcoming 2026 midterm elections.
The case could set a clear standard for when ballots must be received, influencing future elections.
Currently, four Republican-controlled states have shifted to require that mail-in ballots be received by Election Day, reflecting a growing trend among GOP-led states toward stricter voting regulations.
- 14 states and D.C. currently allow ballots postmarked by Election Day but received later.
- Recent shifts in voting laws suggest a potential for more states to adopt similar measures if the Supreme Court rules in favor.
Implications for Future Elections
The outcome of this Supreme Court case is poised to have lasting implications on how mail-in ballots are managed across the United States. A ruling favoring the RNC may lead to stricter mail-in voting laws nationwide.
The decision will significantly affect voter access and election integrity moving forward.
Conversely, a decision against the RNC could reinforce the existing framework that accommodates late-arriving ballots, allowing for more flexibility in counting processes.
FAQ
What is the main legal issue in this case?
The main issue is whether mail-in ballots must be received by Election Day, as argued by the election integrity coalition.
How many states currently allow ballots to be counted if received after Election Day?
Fourteen states and Washington D.C. count ballots received after Election Day if postmarked by that day.