No he hasn't. And if Romney buys the nomination, he will lose in a landslide to Obama. With ease.
As I said before of Cain when his stuff first broke, I’ll say it again; Newt is toast.
Again, my opinion of her statements and the opinions of everyone on FR is irrelevant; this is prediction of the views of the great mass of people out there.
What matters is the electorate.
The Open Marriage thing and the divorce after the MS diagnosis will destroy him with women, pretty much all of whom will believe Marianne.
For the average person out there, particularly the average women, this will enrage them infinitely more than someone parking their money in an overseas tax shelter, etc.