He selects which polls to include in his analysis - and which to exclude. The ones who said, the other polls are over sampling Democrats and underestimating the shy Trump vote were right. He chose to rely on the bad polls, and to disregard (and worse, condescendingly dismiss) the better polls. He can’t do that and then say, not my fault, polls were off....Nate isn't a pollster. Him and his buddies are quants. He just analyzes polls and tries to predict how accurate they are or aren't.