The undercover agents doing this investigation have a significant advantage; they're immune to consequences if they get caught. Malicious actors have to weigh significant criminal charges against the benefit of a single extra vote per visit to a polling place. Doing it at any scale means enormous numbers of involved persons, any one of which could be a law enforcement informant or whistleblower.
Do individual cases of this nature occur? Yes; we catch them regularly.
Do tens of thousands of cases of this nature occur all at once? Almost certainly not.
The undercover agents doing this investigation have a significant advantage; they're immune to consequences if they get caught. Malicious actors have to weigh significant criminal charges against the benefit of a single extra vote per visit to a polling place. Doing it at any scale means enormous numbers of involved persons, any one of which could be a law enforcement informant or whistleblower.
Do individual cases of this nature occur? Yes; we catch them regularly.
Do tens of thousands of cases of this nature occur all at once? Almost certainly not.