Trump’s poll and forecast-defying victory Tuesday immediately raised criticisms of a crisis in public opinion polling, with CNN anchor Jake Tapper saying the result would put the polling and voter projection industry “out of business.” …
An analysis of 145 polls nationally and in 16 states completed within one week of the election shows a number of interesting results. The magnitude of national and state survey errors was not far from historical levels, the more troublesome dynamic was that errors systematically overestimated Clinton’s vote margin against Trump, leading to parallel errors that did not catch a number of key states moving into Trump’s column. CONT.
Scott Clement, Washington Post