Read the report. It’s not in solid democorrupt districts because they will already have all they can get, and so will republicans in red counties.
The fraud will take place in ‘spillover counties’ that are usually not known for dead, illegal, stuffed ballots.
I think it may happen more along the lines of this 8-minute video:
https://www.youtube.com/watch?v=t75xvZ3osFg
They may go to more ‘obscure’ counties to try the deceits. A few here, a few there, add up.