Hindsight is easy, and your hypothetical question is really not fair to the discussion, so let me turn the tables on you.
If you had known Bush had lived with a gay couple, was twice divorced, cheated on wife # 2, never served a day in the military, would supported gay unions and marched regularly in the Gay Pride parades, supportd gun control and federal funding of abortions, would you have voted for him?
I bet with that kind of past, Bush would have never won the first election, let alone re election.
My point isn’t “hindsight.” It is foresight. Rudy isn’t a sure thing. But Bush wasn’t, either.