Note: All non-first choice preferences polling topline data, unless otherwise stated, is among in-person caucusgoers who will determine 90% of the delegate count.

If our new Iowa poll wasn't good for Joe Biden, it really wasn't good for Bernie Sanders. Sanders lost the caucuses by only about a point last time around. If Sanders 2.0 is going to be successful, he'll almost certainly need to take the state this time.

Instead, Sanders is basically tied with Buttigieg and Warren. The big problem for Sanders is he is not the clear candidate of the left. He gets only 16% of liberal caucusgoers. Comparably, Buttigieg comes in with 18% and Warren comes in with 22%. (Interestingly, Sanders does statistically insignificantly better among moderates at 18% than liberals.)

Even among Sanders' bread and butter of young voters, it's not a great story for him. He does lead caucusgoers under age 35 with 21%. That, however, is just barely ahead of Buttigieg and Warren, who have 19% each.

Sanders leads Buttigieg and Warren by a clearer 19% to 12% among caucusgoers without a college degree. They are, however, a minority of caucusgoers. Further, Biden leads Sanders among this group 29% to 19%.

There's not a lot of room for growth for Sanders, either. He has nearly universal name recognition (95%).