Romney's Got the Big Mo
National Review just endorsed Romney, as has Michael Novak.
I think Huckabee's "electability quotient" has been falling rapidly due to a faux paus on Mormonism and another on AIDS. I love candor, but you have to be ready to apologize quick-like if you're candid and wrong. Huckabee has been sluggish to apologize which is not surprising since he is George Bush redux and like George is a bit stubborn.
As for Romney's flip-flopping on abortion, the Left embraces flip-floppers (i.e. from Jesse Jackson to Ted Kennedy to Al Gore on abortion), should the Right do less? Some of the strongest proponents of the right-to-an-abortion were originally pro-life, so maybe Romney will be their foil.