it. you know the responsibility that comes with being first. you know that you're setting the tone for where the country is going to be. >> it will be the coldest caucus night in history with temperatures unlikely to break 0 degrees and windchills that could make it feel more like minus 35. cnn's kylie atwood is in iowa, wearing a hat, with more. >> reporter: iowa is a flurry of activity today with all of the candidates having events across the state. former president trump with a major rally after having to cancel a number of events in the state over the weekend due to the severe weather circumstances here. we also had nikki haley who will have three events across the state. ron desantis having four events. they are all sprinting to the finish here with the iowa caucus just tomorrow and all of these candidates trying to encourage their supporters to get out and actually go to the caucus,