Nate Silver @NateSilver538
It's obviously a 4-way race but Biden winning Iowa has been a weirdly underrated possibility. — PolitiTweet.org
Zach Montellaro @ZachMontellaro
New @MonmouthPoll in IOWA Biden 24% Sanders 18% Buttigieg 17% Warren 15% Klobuchar 8% Everyone else at or below 4… https://t.co/OMTqvxKwmc