Trump's data mirrors 538's:
Despite Trump’s claim that he doesn’t believe the polls, his San Antonio research team spends $100,000 a week on surveys (apart from polls commissioned out of Trump Tower) and has sophisticated models that run daily simulations of the election. The results mirror those of the more reliable public forecasters—in other words, Trump’s staff knows he’s losing. Badly. “Nate Silver’s results have been similar to ours,” says Parscale, referring to the polling analyst and his predictions at FiveThirtyEight, “except they lag by a week or two because he’s relying on public polls.”
http://www.bloomberg.com/news/articles/2016-10-27/inside-the-trump-bunker-with-12-days-to-go