This is also how voting works in the U.K. without issue. I suppose your question is how you’d (a) know that fraud happened and (b) find who is responsible. For

This is also how voting works in the U.K. without issue. I suppose your question is how you’d (a) know that fraud happened and (b) find who is responsible. For (a) I suppose someone would come to vote only to find their name crossed off. For (b) I don’t know. Perhaps there would be cameras. Note that to commit fraud like this you still need one appearance at a polling station per fraudulent vote so it’s hard to have much effect. A second issue to consider is that the list of those who are eligible is made by sending letters to houses asking who lives there and is eligible to vote. There isn’t really any checking of the eligibility.