Let’s toss this out there for their plotting.
What if the Dems pay postal workers to post mark ballot envelopes either before election to say Nov 2nd, Nov 3rd or even after up to 14 days? What if they buy post mark machines themselves and have a nice little set up in back rooms going on?
Since they will know after election who didn’t vote, ballot envelope post marked, folks filling out ballots, stuffing, sealing, there ya go.
It doesn’t have to happen in every state, just a couple of “battleground” states, and in California where they will run up the tally for the “popular vote”.