Bernie Sanders just won the Democratic primary in Michigan. As of this writing, Sanders led Clinton 50.0% to 48.0%. That is huge news, for several reasons. Sanders was not supposed to win Michigan. Every major poll leading into the primary had Hillary Clinton ahead, usually by double digits, and sometimes by nearly 30 points. Nate Silver…
Photo by Gage Skidmore [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons