Whistleblower Warns USPS Ballot System Could Reject Entire Batches of Mail

A federal whistleblower is warning that a new U.S. Postal Service system for processing election mail could create serious problems for mail ballots during the 2026 midterm elections.

The disclosure can be read directly below.

According to the disclosure, USPS began building its Federal Ballot Mail Portal around June 15, less than three months before its planned September 1 launch and roughly five months before the November elections. Work was then reportedly stopped for approximately a month beginning around June 25 because of a court order.

The whistleblower says infrastructure of this complexity could normally take a year or more to build.

The whistleblower alleges that USPS did not complete normal internal testing, customer acceptance testing or a final development stage before the Portal was scheduled to become publicly available.

At the same time, the system reportedly uses what the disclosure describes as a zero percent failure rate for large batches of ballots.

Under the process described by the whistleblower, if a state submits 10,000 ballots and USPS cannot verify one ballot against the Portal, USPS could reject the entire batch and return all 10,000 ballots to the state to resolve the problem.

A mismatch could potentially be caused by something as ordinary as a voter recently changing a name or moving. The disclosure also says there is no clearly defined process for election officials or voters to challenge a rejection.

The allegations go beyond the testing schedule. The whistleblower describes teams working in silos, changing requirements, poor communication and conflicting understandings of how the Portal was supposed to function.

According to the disclosure, workers lacked clear written technical requirements and were still receiving new requirements as late as August 21 — less than two weeks before the planned launch.

These are whistleblower allegations, not findings that USPS has actually rejected valid ballots or that voters have been disenfranchised. But the disclosure argues that combining an unusually compressed development schedule, limited testing and an all-or-nothing batch rejection system creates a significant risk for mail-ballot delivery.