Could Presidential Electors Defect?

The AP has an interesting story about three Republican electors who might refuse to vote for the Romney-Ryan ticket if they are elected.

At least three Republican electors say they may not support their party’s presidential ticket when the Electoral College meets in December to formally elect the next president, escalating tensions within the GOP and adding a fresh layer of intrigue to the final weeks of the White House race.

The electors — all supporters of former GOP presidential candidate Ron Paul — told The Associated Press they are exploring options should Mitt Romney win their states. They expressed frustration at how Republican leaders have worked to suppress Paul’s conservative movement and his legion of loyal supporters. . . .

The defection of multiple electors would be unprecedented in the last 116 years of U.S. politics. It also would raise the remote possibility that the country could even end up with a president and vice president from different parties.

UPDATE: Politico reports that one of the electors in question has resigned.