David Plouffe: What I Got Wrong About the Election

Like many people around the world, I expected a comfortable Hillary Clinton victory on Tuesday. …

My confidence was not partisan spin. It was based on public data, voting history and some sense of the Clinton campaign’s own models. I played with various state scenarios, and even in the most generous outcomes, could not get Donald J. Trump to 270 electoral votes.

But he ended up winning 306 electoral votes and, most important, did it by breaking into the Upper Midwest, leaving the blue Big Ten firewall in ruins.

What happened? CONT.

David Plouffe, New York Times