Late postmarks threaten mail ballots as USPS changes processing
Changes to U.S. Postal Service mail processing since April 2025 can cause ballots mailed close to Election Day to receive late postmarks, which may lead to rejection. Election officials recommend using local election offices or drop boxes, and USPS plans special postmarking procedures about a week before Election Day. In states with a grace period for late-arriving ballots, USPS suggests asking a post office for a manual postmark on the day the ballot is mailed.
The Postal Service began altering daily collection and processing in April 2025 under its Regional Transportation Optimization initiative, especially affecting rural offices. This is part of a decade-long reorganization launched in 2021 to improve financial stability. Because envelopes may no longer be postmarked the day they are collected, election officials who rely on postmarks to judge timely mailing face new uncertainty.
For the midterms, USPS plans special measures: separating returned ballots from other mail starting Oct. 26 and manually postmarking them when collected. Some offices may extend hours by 30 minutes starting Oct. 24 and create voter-only lines or drive-through lanes for manual postmarks. Delivery of ballots is also set to accelerate from Oct. 26.
The changes may most affect voters who rely on mail near deadlines, particularly in rural areas where processing shifts occurred. If late postmarks lead to rejected ballots, those voters could lose a direct way to participate, and election officials may face more questions about fairness and administration. Drop boxes or local election offices could reduce risk, but access varies. Public confidence in mail voting may continue to erode if rejection rates rise.