Whenever there's a vote, the AI's votes(except the Governor's) are always revealed before the human player gets to vote. This gives the human player an unfair advantage. One might want to vote for himself but since he can't win, he votes his ally into office.
In the rules it states, "When an election is
called, you see whom each faction is publicly
supporting for the election, but this may
not be who they actually vote for."
Yeah, I love bribing AI players at the council table. It's a lot more expensive than bribing beforehand, but especially fun in MP games with AI. I love to wait until human players have cast their votes, then bribe a key supporting AI from underneath their feet