Election Fraud
1) A generic outline of how the system can be cheated.
I'm an election official.
I have 50,000 extra ballots printed up.
I have the ballots filled in.
As real mailed ballots come in, and after they are separated from their envelopes, I grab 50,000 and replace them with the 50,000 ballots I had filled in.
2) Electronic votes can be switched as the machines are connected to the internet. The "record" is an image capture of the screen at vote. I can fake that very easy too.
@Raoul_Luke @Zam-Zam