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Author J.D. Vance says he was not surprised by the rise of Donald Trump, because he saw how Trump tapped into what many white, working class Americans were feeling.

"It was pretty clear that no one else, no Republican candidate certainly in the past 20 or 30 years, had tapped into anything remotely similar," Vance said.

He explained that many people in this demographic feel like they are facing a "social crisis," with declining manufacturing jobs, increasing poverty and rising family breakdown rates.

"For the folks who grew up in these areas, what they've seen, frankly, is a community, a neighborhood, cities that are really struggling in a lot of different ways," Vance said. "And they've seen a Republican Party - and a Democratic Party - that hasn't really responded or appreciated the fact that they're struggling."

Vance acknowledged that it's unusual that a billionaire businessman has resonated with this group despite the fact that he almost certainly doesn't understand their problems on a personal level.

"But he at least tried to diagnose the problems that they're suffering from," Vance explained. "He at least tried to talk about the problems that they're facing and the feelings that set in when you feel like your life and your community isn't going too well."

He said that if Trump does not win the presidency, the GOP is going to have to figure out a way to appeal to these disenfranchised voters or "they're going to suffer."

Watch more above.

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