In 2016, the polls gave Democrats a false sense of security in the upper Midwest by failing to predict President Trump's success there. Coming into this year, we thought pollsters fixed their issues, but they were still off in 2020, even more so than the last election. Polls failed to accurately capture support for President Trump, and especially missed the mark when it comes to the Congressional races. We ask Atlantic Staff Writer David Graham why and how pollsters got it so wrong, despite immense pressure to get it right.