The reporting errors were presumably a consequence of the results tapes not being programmed to a format that was compatible with state reporting requirements. Attempts to correct this issue appear to have created errors. The reporting errors did not consistently favor one party or candidate but were likely due to a lack of proper planning, a difficult election environment, and human error.
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The discrepancies did not affect the outcome of any of the elections, but they did add to a growing list of defeats for Trump’s election lies.
Look up risk limiting audits, there’s ways to do it which doesn’t just mean “throw random tech at it”