They're just mad because they can't stuff the ballot boxes or punch out chads.
That's the truth. Republicans finally started watching Democratic voter fraud. It's not nearly so easy for them to steal an election any more. Remember the Republicans protesting outside the three Florida county building while the recount vote, sensing correctly that the Dems were trying to steal the 2000 election? Some even stormed into the buildings and caught Dems in the act of punching out chads.
This year, such fun games as the voting machines in Philadelphia with several thousand Dem votes already on them at poll opening time were caught immediately. And it's not nearly so easy to vote twice as so many Dems found out.
This is a new era, and the Dem dinosaurs don't like it.