
Nate Silver @NateSilver538
For a candidate polling at >=10, the empirical margin of error on the polling average as it stands right now is +/- 16 percentage points! Polling Iowa is really hard, last minute swings are common, and this doesn't seem to be reflected in news coverage of the state. https://t.co/NSb6bVTLPH — PolitiTweet.org