Prediction by Nate Silver of 538: Hillary wins

"It’s tempting to say that voters have made up their minds and that the presidential vote is set. Hillary Clinton has a 6.6-percentage-point lead in the popular vote and an 87 percent chance of winning the Electoral College, according to our polls-only forecast. A week ago, those numbers were about the same: a 6.4-point lead and an 85 percent chance. In our polls-plus forecast, Clinton’s chances are 84 percent, up only slightly from 82 percent a week ago.
But the race could also tighten — or the polls could be overstating Clinton’s advantage. (Or both, in which case Clinton could still lose.)
Well, it depends on your tolerance for risk, I suppose. Donald Trump’s chances in our model are about 1 in 7, and you’d expect a candidate with a 1-in-7 chance to win about one presidential election every 28 years." 538