Nate Silver @NateSilver538
Iowa 2016 had a lot of elements that you might have expected to produce a big swing in national polls. It was a decent-sized upset for one thing, relative to surveys in Iowa that showed Trump ahead of Cruz. But it didn't move the needle all that much. — PolitiTweet.org
Kyle Kondik @kkondik
A major argument for Trump's potential vulnerability in the leadup to the 2016 nominating season was that an early… https://t.co/NywLU0rYCM