The quote you offer talks about voter impersonation fraud, but you talk about voter fraud.
What about the case in which Sven Amuldsen votes, correctly identifying himself as Sven Amuldsen, but casts an illegal ballot because he’s not a citizen, or a felon without restoration of his voting rights, or has already voted elsewhere? That’s not impersonation, in the sense your quoted author means, but it’s nonetheless a fraudulent vote.