Geoff Garin, a veteran Democratic pollster who worked for the pro-Clinton super PAC Priorities USA, said many surveys had under-sampled non-college-educated whites, a group that Trump appealed to. He also argued there had been on over-emphasis on the belief that the country’s rising demographic diversity would put Clinton over the top.

“There was too great a belief that demographics are destiny, and that demographics would lead to a certain outcome,” he said. “The reality turned out to be much different that.”

“The pollsters have lost a lot of credibility and won’t be believed on anything soon,” said Jonathan Barnett, a Republican National Committeeman from Arkansas who supported Trump. “The way they poll doesn’t work anymore.”…

“The very premise of polling is based on the idea that voters will be completely honest with total strangers,” said veteran GOP operative Ned Ryun, who runs a grassroots group called American Majority and had announced his intent to run for Republican National Committee chairman if Trump lost.