WASHINGTON − A Republican push to limit mail-in ballots in elections is hitting the Supreme Court on March 23, and the case could have big implications for the upcoming midterms races.

The case addresses whether absentee ballots must be received – and not just postmarked – by Election Day.

Voting by mail has decreased since its peak during the COVID-19 pandemic. Yet nearly 30% of voters still cast ballots by mail in the 2024 elections, and many states have grace periods for mailed ballots.

President Donald Trump has long railed against mail-in voting, saying it is a practice vulnerable to fraud. He also baselessly insists it cost him the 2020 election.

“ELECTIONS CAN NEVER BE HONEST WITH MAIL IN BALLOTS/VOTING, and everybody, IN PARTICULAR THE DEMOCRATS, KNOWS THIS,” he wrote on Truth Social in August.