Changes in how the U.S. Postal Service transports mail could impact the date that mail-in ballots are postmarked.

PORTLAND, Ore. (AP) — A group of mostly Democratic U.S. senators sent a letter Thursday to the U.S. Postal Service, voicing concern that mail processing changes could affect postmark dates for mail-in ...

On Christmas Eve, the U.S. Postal Service quietly clarified a rule that could determine whether your vote is counted. For decades, the postmark, the official stamp showing when and where mail was ...

The changes, adopted last April and last December, could add at least a day to the time between when a mail-in ballot is sent and when it receives the postmark needed to be legally admissible.