Mitt has run a State which is more than most of those guys can say. Foreign policy experience? Not too much of that on that stage. For a President I want someone who has demonstrated that they can govern. Mitt as a Republican had to deal with a Massachusetts legislature. So he has had to lead and govern in unfriendly territory.
And he looked great in that debate and will trounce Hillary.
Massachusetts is a liberal state and yes, he tried his best in an unfriendly territory.