and come out for them that night. >> i'm concerned because i want people to be safe on caucus day. it's going be negative 28 wind chill. and so what we hope is that they will wear layers, they will bring their photo i.d., and that they will come out and caucus. >> nobody can forecast what the turnout is going to be. anyone who tells you they can do that is not being honest. it's a major wild card. obviously it's going to affect it in some way. you're never going to have an opportunity for your vote count more, pack more of a perch than on monday night. if you care about the future of the country, if you believe in us, come out and do it and you won't regret it. >> we have team coverage tonight with cnn's jessica dean who is live in a very chilly maybe frigid des moines. chad myers is warm inside the cnn weather center with the forecast ahead. and we have two presidential campaign veterans their predictions here as well. jessica dean, we'll start with you because we are now learning donald trump is canceling many of these iowa rallies this week.