Iowa: Warren surges to join Biden in top tier; caucusgoers tilt toward key Warren demographics

… One of the reasons Elizabeth Warren is doing better in Iowa is simply the demographics of likely caucusgoers. Nationally, Warren’s support is considerably strong among white Democrats and those who have a college degree.

Both of those groups make up a considerably larger portion of the Iowa electorate than they do the national Democratic primary electorate.

White Democrats make up a little less than 60% of the potential Democratic electorate in our last few national polls. In Iowa, they typically make more up than 80% of actual caucusgoers. CONT.

Harry Enten, CNN