I'm not taking a stand on whether this is some weird edge case bug or whether it's a conspiracy, but I would like to point out that if it is fraud, it's an incredibly inept attempt. Using a checkbox for visual confirmation of a vote means the fraud was easily detectable. It would have been much better to mark the box for Obama but count the vote for Romney, if fraud is your goal.
This is extremely similar in content to Elliot Engle's book /A Light History of the English Language/ and a lecture he gave semi-regularly at NC State when I was a student there.