The arrival of the police officer at a Hanover Park polling place in 2012 was probably the most exciting thing that’s happened to Roberts on the job. She’s never seen attempted fraud, she said: “Frankly I don’t know how it happens, given all the systems that are in place.” But there was some confusion at a vote in Palatine in about 2008. Three precincts were voting at one polling place, and at the end of the night, the number of ballots didn’t align with the number of votes cast. It turned out, Roberts said, that one or two voters had cast their paper ballots in the wrong precinct.