Yeah, I think yesterday really hurt Gingrich. He just came across as a hater, but with little redeeming qualities. I agree with Hef, RP just looked impotent. Or, rather irrelevant. At the end I asked myself "why is he even invited anymore at this point?". The realistic answer to the question is probably: To serve as a "commercial break" between Romney vs. Gingrich. I mean, they even clustered Santorum and RP together in their answers, almost as a "and now for the lulz".
rumborak