protection today. trump is mogul and carson is eli, a biblical reference. people are getting away with murder. reporter: without a hint of irony, the billionaire reality tv star who rewrites political rules every day is calling out ben carson for an unconventional campaign. you stab somebody and the newspapers say you didn t do it. this is the only election in history where you re better off if you stab somebody. reporter: for carson, anecdotes about overcoming a pathological temper as a child is a selling point for many gop voters enthralled with his story of redemption. trump is trying to reframe it as just plain crazy. if you try to hit your mother over the head with a hammer, your poll numbers go up. i never saw anything like it. reporter: the carson campaign
mellow at these debates, but a source close to him tells me that he s actually been pretty fired up behind the scenes, mostly because of all of the scrutiny of his past statements, and we may see a different side of him tonight. people are getting away with murder. i never saw anything like this. reporter: without a hint of irony, the billionaire reality tv star who rewrites political rules every day is calling out ben carson for an unconventional campaign. you stab somebody, and the newspapers say, you didn t do it! this is the only election in history where you re better off if you stab somebody. reporter: for carson, anecdotes about overcoming a pathological temper as a child, like attempting to hit his mother with a hammer, is a selling point for many gop voters enthralled with his story of redemption, but trump is trying to reframe it as just plain crazy. if you try and hit your mother over the head with a