Actual methods, some quite ingenious and worthy of HN discussion, are documented here:<p><a href="https://nypost.com/2020/08/29/political-insider-explains-voter-fraud-with-mail-in-ballots/" rel="nofollow">https://nypost.com/2020/08/29/political-insider-explains-vot...</a><p>Plugging the holes, even if you don't believe they are being exploited, is essential to restoring bipartisan trust in our elections.