What Nate Silver got right in 2016 were the correlations in the Rust Belt, which were traditionally considered Democrat. 538's model predicted that losing one o

What Nate Silver got right in 2016 were the correlations in the Rust Belt, which were traditionally considered Democrat. 538's model predicted that losing one of those states would likely mean losing all of them for Clinton, because for example the polling errors were likely correlated. And indeed losing there is what cost her the election