cold, the heat is on in iowa where candidates are making their final pitches before caucus-goers head out in what will be the coldest voting day in iowa caucus history. and the wicked weather not just hitting iowa, it s slamming the upper midwest as we speak heading east. it s already knocked out power for more than a quarter million americans and delayed thousands of flights. more on that storm coming up. but first, to the candidates far from hunkering down. and in the case of one vivek ramaswamy, picking up a surprising late endorsement. he s here to tell us all about it. and that run-in he had at a campaign event. and our hawkeye state-palooza doesn t end there. former governor terry branstad on why he s not endorsing, well, anyone. and iowa s longest serving senator, chuck grassley, on why he isn t either, at least not yet. bundle up. cavuto live is starting now. neil: welcome, everybody. i m neil cavuto. it is remarkable, i am not snowing you, it is uncanny how remar