Calibration!! Really?? Any software/hardware developer here worth his/her salt would agree that can't be it. Let's see what could have happened: 1) The Y axis of the screen was maladjusted 2) Touch Sensitivity of the screen was reduced due to incorrect settings 3) Touch area had hair/dust/oil on it. But if you read the voter's story it happened only for Obama's field. Don't they have independent watchdogs looking after this thing in United States? If shit like this went down in India, the Election Commission would have simply closed the whole damn polling booth(for the day) and arrange separate polling on a later day with extra scrutiny and security.
Disagree. I've worked with resistive/infrared touchscreens for many years and this behavior is entirely consistent with touchscreen calibration errors, especially with cheap/crappy touchscreens. See my other comments here: http://news.ycombinator.com/item?id=4752605
