Whistleblower says USPS deploying new, ‘untested’ IT systems governing mail-in ballots

A newly released whistleblower complaint reveals details about the “rushed” effort by the Trump administration and U.S. Postal Service to install three new restrictive IT systems that would potentially deny thousands of mail-in ballots, if the federal government disagrees on their eligibility.

According to the complaint, written by attorneys at the nonprofit Whistleblower Aid and released by Sen. Richard Blumenthal, D-Conn., the individual is a federal employee with “direct knowledge of potentially catastrophic problems” related to USPS’ handling of mail-in ballots for the upcoming 2026 midterm elections.

The person claims that USPS is deploying entirely “new and untested” IT systems, including a new Federal Ballot Mail Portal that would potentially give USPS more control over when and whether states receive federal mail ballots for their voters.

The disclosure describes the portal and other systems as “new IT systems and corresponding protocols [that] will govern the delivery of ballots to voters as soon as the 2026 mid-term federal elections and beyond.” It calls the development process “secretive, rushed, chaotic and fundamentally flawed,” and part of a larger effort by agency leaders to rush implementation of the system ahead of the 2026 elections.

That rush has forced USPS to forgo much of the pre-release testing of those systems to ensure they work as intended and can safely interoperate with other federal systems. As a result, the whistleblower says the portal is so restrictive it can potentially reject large batches of state mail-in ballots based on a single identified ballot error.

According to the letter, there are three primary new IT systems USPS is rolling out this election cycle. The Federal Ballot Mail Portal stores both voter names and newly placed ballot barcodes, while a new verification system will compare ballot batch manifests with information in the portal. A third system is described as a new physical barcode sampling verification standard “with a zero percent failure rate.”

“The Whistleblower paints a dire picture of a slapdash software development process as the USPS attempted to create this complex IT system, with multiple points of ballot review, in a matter of weeks,” the letter said. “The very manner in which the project is being developed deviates dangerously from even the most basic software development best practices.”

In all three cases, the onus is explicitly placed on state election officials to resolve discrepancies between federal and state systems.

For example, when the federal government and election officials have different data on batch manifests, which can include tens of thousands of ballots, “election officials will be responsible for resolving any errors purportedly identified in the scan, and for resubmitting the batch manifest – USPS will refuse to accept the ballot batch until the errors are resolved.”

A similarly restrictive approach is described for verifying ballot bar codes.

“As presently designed, if even one bar code on one single ballot in a bulk-mailing of 10,000 ballots fails to properly scan during the verification process, the entire batch is rejected and sent back to the state – effectively stopping the ballots from being mailed to voters,” the letter stated.

But the whistleblower said those kinds of small errors are likely to happen in any process that relies on scanning barcodes. In this case, the rushed development and specific location of the barcodes on federal mail ballots means the portal “will almost certainly have significant operating problems.”

The letter says the whistleblower is aware of concerns “among those whose job it is to build this software” that the project is not subject to standard testing and debugging work, and that the systems were escalated to other testing environments before they were even finished. It also claims that the systems’ development was siloed across different teams, with no time to test different software components individually or the system as a whole.

The whistleblower also claims that the USPS rule changes,  which have been subject to multiple court injunctions, have continued throughout, in violation of federal court orders. Despite those orders, the agency is believed to have started work on the IT systems in June 2026.

David Becker, executive director of the Center for Election Innovation and Research, said the disclosures could potentially lead to new lawsuits against USPS and the federal government.

“This seems to confirm that the USPS is totally unprepared and unqualified to take on this vast responsibility interjecting itself into state’s mail voting processes,” said Becker on Bluesky. “And could incur liability if USPS truly plans to reject thousands of ballots if there’s even one error.”