Statistician and forecaster Nate Silver is calling out presumptive GOP presidential nominee Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE for constantly talking about his polling while on the campaign trail.

“This was in the phase where he was spending so much time talking about his polls — I think he bragged about, like, this rally he bragged about how ‘I made polling famous,’” Silver said during Politico's "Off Message" podcast.

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“Of all the problems Trump has, maybe it's not his worst one, but I do wonder if his kind of ability to unskew the polls to his own satisfaction could also be working to his detriment," he continued.

“He doesn't feel the need to adapt and adjust. I wonder if he still believes some Gravis poll from five months ago showing him doing well among Hispanics. I wonder if kind of deep down he believes his own B.S. a little bit too much.”

Silver, founder of the political analysis website FiveThirtyEight, gave Trump just a 19 percent chance of winning the presidency. He said failing to predict Trump's primary victories, however, made him worried because "nobody was like, 'You are wrong.'"

He added he expects there to be a "fairly significant third- and fourth-party vote, and people under-voting the top of the ballot."

Still, the large number of voters this year who are undecided or voting for a third party may have an effect on his model.

"That's a big thing that we're looking at," he said.