gingrich to the moon and mitt romney to e white house. what do you think? reporter: on the campaign trail friday, gingrich continued firing rockets at romney, hitting the air with a new ad. what kind of man would mislead, distort, and deceive just to win an election? i thought it was a delightful debate. i loved it. reporter: romney labeled is desperate and some are using to sgrib establishment fears triggered by gingrich s south carolina comeback. there was almost a full line panic at the top of the republican party. gingrich is like a wild date in the primary but in the general election he s not the winning horse. reporter: no matter how rough it becomes gingrich says he s in the race to the finish line and acknowledging the forces mounting against him. if you re an staebleed republican and enjoying life in washington and you don t mind presiding over the decay, i m a threat. and you can tell who they are by how hysterical they get. the fact is ronald reagan had exactly