“I don’t understand how someone can be active enough within his/her political party to be chosen as an elector, then turn around and vote for the other party’s candidate.”........
Money, lots of it, can change a lot of minds. My guess this is the case. Chances are quite good that “electoral” will NOT be holding that position after December’s vote.
An Elector switching his vote for a reason other than being a kook would likely be replaced by the state or his vote not accepted by Congress. Relax.