A new Iowa Starting Line-Change Research poll shows Elizabeth Warren opening up a commanding lead in the Iowa Caucus with 28%, followed by Joe Biden and Bernie Sanders at 17% each.

They are followed by Pete Buttigieg at 13%, Kamala Harris at 8%, Cory Booker at 3% and Beto O’Rourke at 3%.

“The horserace numbers reflect a shake-up that those of us on the ground in Iowa have been seeing for a while.”