In reality, modern forensics should easily identify the existence of fraudulent votes.Fraudulent ballots are necessarily mass produced ballots - and therefore they must lack the uniqueness inherent in a ballot filled out by a unique individual. Any fingerprints/DNA will on NOT be unique from one ballot to another.
Modern digital tech (which the FBI must have) should be able to grok this thoroughly.
Because they're ALL ABOUT rooting out voter fraud.
Just like they were ALL OVER humper's laptop...