
Nate Silver @NateSilver538
Candidates in the 3rd tier (Booker, Klob, Castro, Beto) might have more ability to build a broad coalition. But not sure there's any particular reason to think they'll get a surge. Booker & Castro had good debates but still overshadowed. Voters like the top 3-5 candidates a LOT. — PolitiTweet.org