I know he is a freaky dude and all, and I do not approve of vampires in elected office, and I would most likely not hit it off with him in a social scenario, but when I read that he is 45 and his GF is 19, I said a spontaneous "Niiiiiiiiiiiice".
Sorry, couldn't help it, Although according to the commonly-accepted rule of "your age divided by two, plus seven", the youngest he could date and not be creepy is 29.5.