Military voters were at the heart of the Supreme Court’s mail-in ballot decision

Mail-in voting was created during the Civil War so soldiers could vote. That legacy helped shape how the Supreme Court ruled more than 160 years later.

By: Jamie Rowen, UMass Amherst, The Conversation

Outlets: The Conversation

Published: July 2, 2026

Words: 1,339

Last Updated: 2 weeks, 6 days ago


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By Jamie Rowen, UMass Amherst

In Watson v. RNC, decided June 29, 2026, liberal and conservative Supreme Court justices joined a noteworthy cross-ideological majority to uphold state grace periods for mail-in ballots. The decision, which went against President Donald Trump’s policy preferences, preserved the status quo, allowing states to accept and count mail-in ballots postmarked by Election Day but received after.

The case revolved around the meaning of “election day,” which federal law …