The Supreme Court agreed in mid-Nov.

2025 to take a case about counting mail ballots that arrive after Election Day.

Mississippi asks the Court to bar states from counting ballots received after Election Day, while challengers say that would throw out ballots that were mailed on time but delayed in transit.

Election-law scholar Richard L.

Hasen wrote in Slate that if the Court upholds Mississippi, "29 states and the District of Columbia would have to change their laws to require receipt of virtually all ballots by Election Day." Mississippi’s brief offered a similar estimate, saying roughly 30 states plus D.C.

could be affected.

Hasen said he hopes the Court will let Mississippi keep accepting ballots postmarked by Election Day as a policy choice.