As for the polls, let's look at the Real Clear polling average and compare to the current numbers

Sanders is under the average by 2.6
Buttigieg is over by 2.8
Klobuchar is over by 8+
Warren is under by <2
Biden is under by <3 pic.twitter.com/mWj5WocXjM

— Jamie Dupree (@jamiedupree) February 12, 2020