Thousands of uncounted absentee ballots. I’ve tried mentioning in the past that absentee ballots aren’t always certified votes (if they won’t make a difference).
Thousands of outstanding votes in an election with a 600-ish vote margin.
Count the votes.
Then recount for ballot stuffing and fraudulent tallying.
Double check those signatures on the absentee ballots. If the voter registered with a group signing up voters, triple check it along with the residence. I believe Dems collect registrations, copy them, and then vote absentee, knowing that a lot of those they registered will not take the time to vote in person.