“This is not just a few public pollsters out there that missed it. This is something that is unique to this election,” said Patrick Murray, who runs the Monmouth University Polling Institute. “It just seems to be that if the name ‘Donald Trump’ is on the ballot, all bets are off when it comes to the polls being right.”…

There’s little evidence that poll respondents are lying, however. More pollsters believe it’s actually a difficulty reaching voters more likely to support Trump in the first place, either because they’re harder to find or are less likely to take phone surveys even if reached.

“The continuing and growing problem of nonresponse is something that we have to look at quite closely,” said Don Levy, the director of the Siena College Research Institute, which partnered with The New York Times for dozens of battleground-state polls.