famous for taking front-runners and slapping them at the last minute. if newt gingrich surges in iowa, mitt romney will have a real headache in must win state of new hampshire. look at south carolina and florida and states come after that. remember this is domino effect. whoever starts to knack over the first one will have the momentum. jenna: jon as more for you carl and another guest. one big family. jon: carl can answer any question you can throw against him especially about politics. newt gingrich is holding firm to his campaign principles vowing not to attack his main rival former massachusetts governor mitt romney. we ll see how long it sticks. the former house speaker reportedly telling his aides to not to respond to any attacks from the romney camp. they will choose to quote, kill him with kindness. will that work in the rough-and-tumble election cycle? chris stirewalt is fox news digital politics editor.