  Pre-election logic and accuracy (L&A) testing is a process in which election
officials validate the behavior of voting equipment by casting a known set of
test ballots and confirming the expected results. Ideally, such testing can
serve to detect certain forms of human error or fraud and help bolster voter
confidence. We present the first detailed analysis of L&A testing practices
across the United States. We find that while all states require L&A testing
before every election, their implementations vary dramatically in scope,
transparency, and rigorousness. We summarize each state's requirements and
score them according to uniform criteria. We also highlight best practices and
flag opportunities for improvement, in hopes of encouraging broader adoption of
more effective L&A processes.
