Great work has been done on this. As the window on simple ID fraud narrows, the Dem’s will expand other avenues. Some big problems to be dealt with next:
1) Illegal Absentee Voting where others cast ballots for people who should not be voting due to mental incapacity (such as clinically-diagnosed dementia, coma, severe brain injury, institutionalized mental illness, retardation, etc.). Once partisan “helpers” get these folks are on the voter rolls, what stops them from signing Absentee Ballots and mailing them in?
2) Duplicated voter registration, with votes cast in two or more states or jurisdictions. Large numbers of duplicate registrations have been found to exist, even though many states will not provide their data. Even if they vote only once, Dem’s in “sure thing” Blue States possibly shift registration to competitive states. Probably 1000’s in Mass-New Hampshire; NY/NJ-Florida; DC-MD/VA. CA-AZ?
Another big threat in deep-blue precincts is to have ‘people’ loitering around to vote on election night for registered voters at 6:55pm who didn’t bother to vote.