caucus. i think people like to say iowans are used to this, they have four-wheel drive, all of that. this cold is life-threatening whether it could be different. >> thank you so much . the iowa caucuses are meetings run by political parties that get underway monday night at 7:00 p.m. local time with caucus goers government high school gyms, community buildings and churches across the state. voters cast a ballot for their preferred candidate and those votes will be tallied. iowans are bracing for an arctic blast raising questions about turnout. let's turn to senior political writer and analyst harry who is at the magic wall who is with me . you have a coat on? >> reporter: unfreezing. goodness gracious. >> it will be bone chilling in iowa . what will the impact be?