Not a chance. Although Mr. Gingrich is popular with conservatives, he has no appeal to moderates and is despised by the left. He has zero chance to become the POTUS.
This is one reason why I am not crazy about Newt or, dare I say it, Duncan Hunter... While both are right in their stand, neither hold another needed quality, the ability to inspire America to Conservative values. Both are simply 'preaching to the choir' candidates. Yes, they would be great Presidents, but right now we need someone that will rebuild our values and that means a figurehead that is inspirational.