A risk limiting post-election audit is an audit based on statistical principles designed to limit the risk that an election may have given the wrong result.
Following a loss to Republican Donald Trump in 2016 and Green Party of the United States candidate Jill Stein's initiative to ask for a recount in some states for which there was suspicion of election fraud, Hillary Clinton (who won the popular vote in the election) and her campaign joined in supporting the idea of recounts, even though their initial risk-limiting audits had shown no evidence of fraud. The Clinton campaign announced, "While that effort has not, in our view, resulted in evidence of manipulation of results, now that a recount is underway, we believe we have an obligation to the more than 64 million Americans who cast ballots for Hillary Clinton to participate ... [in ongoing investigations]."