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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 ...

It's always good seeing you, jeff. and you've been one champion cheerleader or if your state, and -- for your state, and i appreciate it very much. honored to have chuck grassley with us, iowa senator, longest e serving senator, at that, kind enough to join us on the phone. senator, how are you doing? >> very good. glad to be with you, and glad you're paying so much attention to this historic thing that goes on in iowa every four years. finish. neil: yeah, there are one or two ores doing so, but it is getting a lot of attention. how do iowans feel after it's over? all a these candidates leave,...