Money. The chance to get inside the world of Washington DC money and power. Their whole world-view system revolves around getting their hands on lots of money; they have ample evidence in their own life experience to believe they can get it by manipulating a man.
If there was a female equivalent of Weiner,there would not be enough money in the world to make me want to hold my nose or put a paper bag over my head. Major league character flaws in these people.