What is the term for an elector in the Electoral Collage who votes for a candidate they are not pledged to?

The Presidential election is now less than two years away (weird, right?).  So, we bring you this question off of our Pocket Trivia: U.S. Presidents game:  What is the term for an elector in the Electoral Collage who votes for a candidate they are not pledged to?  Is it a Lying Voter, Twisted Elector, Faithless Elector or Sockless Vote?

Sockless Vote?  I don't even know where I got that from.  I guess it sounds like something that could be true though.  History is sort of random.

Anyway, the correct answer is Faithless Elector.  As you may know, the U.S. population doesn't actually vote for a Presidential candidate, at least not directly.  Instead, they vote for a slate of electors that are pledged to a Presidential candidate.  Those electors then vote for the President - the first one to 270 wins.

In total, 164 electors have voted for a candidate they were not pledged to vote for.  A faithless elector has never actually decided the outcome of a Presidential election, though it came pretty close to happening in 1796, when a wannabe faithless elector was denied the chance to vote twice for Aaron Burr, costing Burr the election.  The most recent time this happened was in 2004, when a Minnesota elector voted for John Edwards for President, despite being pledged to Kerry (though this may have been in error).  Since Minnesota voted by secret ballot at the time (since changed), no one knows who actually did it.