I remember the old Nintendo DS touch screen, which was resistive, required user calibration where you would press on the corners of the screen. If you missed the corners (which, with the relatively thick stylus and the relatively thick bezel on the original DS, wasn't uncommon), the accuracy of your touch positions would be very notably off, to the point that using touch-screen keyboards in some games would be difficult.
Obviously I don't know for sure if this was the exact case with this voting machine, but the point being, some touch screens do require calibration and there is a chance for error. Or, of course, it could simply have been a factory mistake.
Either way, I doubt there's any malice behind this error.
I remember the old Nintendo DS touch screen, which was resistive, required user calibration where you would press on the corners of the screen. If you missed the corners (which, with the relatively thick stylus and the relatively thick bezel on the original DS, wasn't uncommon), the accuracy of your touch positions would be very notably off, to the point that using touch-screen keyboards in some games would be difficult.
Obviously I don't know for sure if this was the exact case with this voting machine, but the point being, some touch screens do require calibration and there is a chance for error. Or, of course, it could simply have been a factory mistake.
Either way, I doubt there's any malice behind this error.