[Hoot Gibson]

I think last night night have been Trump's best debate performance but he was totally stumped on the question about the U.S.'s nuclear triad. Cruz, Rubio, Christie, and Carson all had solid performances.

However, Rubio's attempts to paint Cruz's record on illegal immigration as being as weak as his own is a debate that he will continue to lose. Rubio would be wise to stay away from any topic that allows Cruz to remind everybody about the Gang of Eight. You don't want to be accurately and fairly associated with Dick Durbin and Chuck Schumer in a Republican primary race.