Iowa Caucus underway! Will Trump shatter all records?

[00:18:25] Sen. Ron Johnson [00:36:48] Michael Goodwin [00:55:10] Brit Hume [01:13:32] Michael Pillsbury [01:31:55] Trey Yingst [01:43:33] Mark Penn Learn more about your ad choices. Visit podcastchoices.com/adchoices