who will survive past iowa. donald trump already has his audience. fox has decided to throw in with him. but he is vulnerable. especially if there could be a sprays on monday. vulnerable to who is the nomination? no. but in iowa? anything is possible. >> david, we'll give you the final word as we wish you warmth. in atlanta, people say icy, part of the time they mean dripping in diamonds. jewelry. what you are up against when you say icy means actual literal ice. frozen water. final thoughts in. >> it will be quite a night in iowa. there's no reason to postpone it. there are so many calendar reasons we've got to do it when we've got to do it. everybody will have to put their heads down and persevere. if you're in iowa, dress warm, bundle up, layer, layer, layer, and get those hand warmers at walmart. we've got work to do monday