If memory serves me, I recall a few screen shots where Trump’s numbers decreased significantly as time went by. I suspect it was a combination of numerous fraudulent practices that put Biden over the top. Definitely the mail-in and harvested ballots, but I think the machines also played a part. I think Tina Peters discovered precisely that as well.
As Traitor Joe said, they had the most extensive voter fraud operation in place.
The fact is that the Dems have a much better system in place for harvesting ballots.
Once the drop boxes were in place all you needed to do was fill out the ballot and then have someone drop it in the box.
The mules would pick up the ballots from one place in the city and then drive around dropping them off 5 at a time into various drop boxes. This is exactly what was show in 2000 Mules.
The vote tabulation charts/graphs all showed the same thing. As soon as they started counting the mail in ballots Biden jumped to a lead and held it until they were done counting.