As have I. and I believe they hurriedly punched the ballots with an awl or a nail set punch and a hammer, and that the punches weren’t clean; hence the “hanging chads”
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The “League of Women Voters” in 1970 were caught “pre-voting” ballots in Miami just that way ,, a punch set in a drillpress.. voting 100 ballots at a time... The journalists that caught them were arrested after presenting Janet Reno with examples of the ballots they took from the warehouse... read the book Votescam. If you voted non-RAT your vote was invalidated as it had two votes for that office...
So, we open the absentee ballots early, and bubble in Hillary along with the already existing vote for Trump, and Abracadabra Presto Chango, we null out Trump's vote, before the absentee ballots are counted.
Since the ballot is not tied to a individual voter, you can't find out which candidate the voter intended to vote for.