Where is the opportunity for voter fraud? Especially in numbers large enough to swing a national election.
Who knows? How did Epstein get away with what he did? I would not tell how voting fraud happens unless they get caught, which is very unlikely. And now days even when the criminal gets caught everything that happened gets redacted. After all we wouldn't want to offend any innocent electronic voting machine corporations that might be making campaign contributions. But knowing how corrupt both parties have become, a reasonable person should be extremely surprised if honest vote counting was taking place at all.
So our elections at least need to give the appearance of being fair and truthful. To that end, perhaps we might improve by at least a standardized and timely election process. States who refuse to get their act together on a timely federal election should be heavily penalized. Because when the officials start screwing around for days on end counting their votes, that's when my confidence drops to zero. It just gives criminals even more time to do bad deeds.