Voter machines with a paper backup, seem ideal, and only a few mostly Republican controlled states do not have this. I believe this is deliberate, the same way voter ID laws have been surgically and cynically planned to weaken elderly and minority voter participation who tend to vote Democrat. Voter fraud, while a longtime tradition in certain States which have near absolute control over their voting procedures, I believe is much more common in longtime Republican States, although the City of Chicago certainly is on the list too. No one has proved it is significant to election results during modern times. Trump will certainly be a poor loser, and blame others should he lose, as he never takes responsibility for any mistakes or blunders, ever. Could be messy.