More information on the early-voting tabulation problem in Cateret County, NC - using the Unilect Patriot voting system - has surfaced after some additional testing (“Warning light came on, state tests reveal”). You’ll recall that the central problem here was that the system continued to allow recording of votes after its memory was full which resulted in 4,438 out of 7,536 early ballots to be lost.
It turns out that the Patriot system’s central controller (it has a central controller and a group of daisy-chained voting terminals) displayed an error message, “Voter Log Full", until the controller was reset for the next voter. However, the display continued to increment the number of ballots cast. Poll workers are not experts so I’m sure that they took the incrementing of the number of ballots cast to be evidence that votes were still being recorded. Even technical experts would admit that a message like “Voter Log Full” doesn’t sound critical on its face; it sounds like some audit log that records when ballots are cast is full, not that the machine is no longer recording ballots.
This is a great illustration of the dangers with paperless DRE voting, or, at least, voting without robust auditability. If this had been an error with an optical scan system, there would still be paper records that could be recounted. What should have the Patriot system have done? It arguably should have not allowed a single voted to be cast once full, and should not have allowed poll workers to override the error message.
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