The court cases in Ohio ( Melowese Richardson) and in Indiana recently should prove to the lunkheads that voter fraud is a problem. Voter ID ASAP. Obama is dumping millions into Kenya for voter ID. He seems to have no issue with having an ID. ;>)
Voter fraud (and other kinds of election cheating) is thousands of times more common than an occasional story about a case here and there would seem to suggest. That's because law enforcement is generally reluctant to get involved with these cases because they fear a political backlash from the Left!
So the fraudsters know that up side to their shenanigans generally far outweighs the risk of being prosecuted and convicted.