Supreme Court Threatens to Undermine Voter Access by Ruling on Late-Arriving Mail-In Ballots

The U.S. Supreme Court is poised to determine whether mail-in ballots arriving after Election Day will be counted, a decision with the potential to erode hard-won voting rights across the country. At the center is a Mississippi statute that allows ballots postmarked by Election Day to be counted if received up to five days later—a crucial safeguard for working-class voters, people of color, and those facing systemic barriers to voting. This law is mirrored in about 18 states and territories, reflecting a broader commitment to inclusive democracy.

In 2024, at least 725,000 ballots postmarked by Election Day arrived within the legally accepted window, according to election officials in 14 of the 22 states and territories that honor late-arriving ballots. These votes represent the voices of Americans who, due to postal delays or lack of access to polling places, would otherwise be silenced.

Opponents, led by the Republican National Committee, seek to suppress these votes by demanding all ballots be received by Election Day, a tactic that risks chaos and disenfranchisement in multiple states. Such efforts are part of a broader campaign to undermine the democratic process and restrict access to the ballot box.

The Supreme Court will hear arguments in early 2026, with a ruling expected by June. The outcome could dramatically reshape mail-in voting and either protect or further erode voter participation ahead of the 2026 midterm elections.