Nate Silver @NateSilver538
One scenario worth thinking about is that other than Biden, no one's an obviously safe bet to get >=15% of the vote in the South. (Even *with* a post-IA/NH surge, Buttigieg might be weak enough in the South to be <15%). And if you don't get at least 15%, you don't get delegates. — PolitiTweet.org
Seth Mandel @SethAMandel
Is Mayor Pete's rise good for Biden, by hurting Warren before the South?