I think the fraud is tiny, but it does exist.
You gotta be a true believer or a flat out nut to risk that kind of thing.
Of course those caught get a slap on the wrist, and that is a problem.
Gwenn Moore and her son Solar big dick Pukwana got off scot free
https://en.wikipedia.org/wiki/Gwen_Moore
Systemic vote cheating is more real and more prevalent than systemic racism.