Gingrich has won (cough) two - SC and GA, his home state.
Newt is clearly the spoiler. However, don't worry about it. Gingrich won't withdraw. Newt's ego is as big as the Titanic. Sorry, bad analogy.
With supporters like we have seen here, how does it matter if Newt only got 15%? They will make him to believe that he’s the chosen one and entitled to the nomination. Primary results be darned!