Electronic voting machines (ala Soros) in districts where Repub poll watchers were kept out by Dembulbs who couldnt find their names on the poll watcher lists. By the time judges let them in the damage was done. Have to go back to old-fashioned paper ballots.
I have yet to hear of a single case of the RNC challenging a vote.
Why don't we start in Maine? Maine ought to be a solidly Republican State, if for no other reason that the Democrats are keeping it mired in poverty.