the rival spent saturday campaigning in iowa. while trump flew in late last night. but the challenge for the nomination will ultimately will pay off. the wild card on monday night is the dangerous cold front bearing down on iowa. with the teams expected near 20 degrees below zero. the candidates urge supporters to brave the cold to go caucus tomorrow. but we're going to have to wait and see how much the bone-chilling weather and dangerous roads ends up affecting the turnout and the results. joining me now from iowa is my "state of the union" co-host and friend dana bash. to mark the 15th anniversary of the "state of the union." thank you so much for getting up early an joining. i'm glad you're not outside. set the stakes for us in light of the new poll. >> reporter: as you said, the key thing to keep in mind is that donald trump is far and away the front-runner. his support is as wide, jake, as it is deep.