Months ago, FiveThirtyEight's Nate Silver crunched the numbers and found it was extremely unlikely that Trump would become the nominee. He wasn't wrong, and yet here we are. So why is this election so unpredictable? Silver talks to Brooke about why the rules of politics seem to be broken this year, and how electoral predictions are based on a short history. Plus: could the country be due for a political realignment?
Nate is also author of The Signal and the Noise: Why So Many Predictions Fail - But Some Don't.