The Forecast before Iowans Caucus

This week, as the Iowa caucuses loom, we break down a flurry of new polls. Plus, we discuss why it's difficult to predict who will win in Iowa, and which candidates have an advantage going into the caucuses.To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices