Same here. That's why I don't believe her ambition is the reason she's staying with this guy. If anything, staying with him hurts her chances of attaining political office herself, if that's what she aspires to do.
Rather, I think she's doing what so many wives - including conservative and/or Christian women (but not this one) - do: She's standing by him with the hope that he'll "change." In reality, what her husband is doing is a big problem among many men today, and no amount of therapy will ever cure him. He's an addict.
He’s an addict because he can get away with it and there are never any consequences to him. Incidentally, I just saw a study in the WSJ that said there’s no such thing as a “sex addict,” and this has just been a convenient claim in our therapeutic age to excuse bad or even illegal behavior by prominent people.
I think a lot of this is because people like Clinton and Wiener and Obama think that they will get sympathy by claiming that they are working out their personal therapeutic dramas in public. Obama claims he is making himself feel better for having been abandoned by his African father by trying to create a black persona; Wiener is trying to make himself seem like somebody with a irresistible thirst for danger that belies his whiny nerdishness; and Clinton, just a good ol’ boy who simply can’t control his loveable, feckless nature. They think voters will be sympathetic to them — and unfortunately, they seem to be right.