ROBERTS: It was also the night that Newt Gingrich found new life, a performance that earned a rare standing ovation. And by Tuesday, had catapulted him in the polls.
PROFESSOR KENDRA STEWART, COLLEGE OF CHARLESTON: He woke up and had a sudden surge that I think Gingrich knew was coming, but took the rest of us by surprise.
ROBERTS: With a head of steam on, Gingrich took aim at Rick Santorum. Hoping to embarrass him out of the race.