How trustworthy are the polls, more than a year after the 2016 election?

Over the past year, political professionals have been picking over the pre-election polling data to figure out whether the polls failed to predict Donald Trump’s upset victory over Hillary Clinton.

In many people’s minds, the polls were flat wrong in 2016. Actually, it’s more complicated than that. …

After interviewing almost a dozen pollsters and experts, here are the key points we learned about how the election influenced polling, and what to look for in the future. CONT.

Louis Jacobson, Politifact