"An electronic voting machine was taken out of service on Tuesday after being captured on video changing a vote for President Barack Obama into one for Mitt Romney.
The footage showed a voter in a polling booth repeatedly attempting to cast his ballot for Mr Obama, only to find the machine ticked Mr Romney's name.
Baffled by the result, the unnamed voter alerted staff at the Pennsylvania voting station to the problem before recording what was happening. He later posted the video on YouTube.
He said: "I initially selected Obama but Romney was highlighted. I assumed it (the machine) was being picky so I deselected Romney and tried Obama again, this time more carefully, and still got Romney. "
