With one more day before the end of the election period (I used to call tomorrow election day, but really it's just the endpoint of weeks of voting), it looks like Hillary Clinton will take it. To be fair, Trump is doing better than I expected, and I'd give him somewhere between a 10% to 20% chance of winning.
The argument for Clinton is pretty easy to make--she's ahead in the polls. You don't really need any more than that. Add to that the fact she presumably has a far better get-out-the-vote machine and she becomes the clear favorite.
Furthermore, there's still a fair amount of undecided voters who may turn to Trump, who's finishing strong, while Hillary is still dealing with scandals.
Also, there's reason to believe Trump is undercounted in the polls, which are only based on models, after all. He brings new people to the GOP (while the old Republicans voters have been coming around). Groups whose vote was depressed in the past will show up, while certain Democrat voters, especially African-Americans, just won't come out for Clinton like they did for Obama.
Add it all up, and Trump takes it. Anyway, that's what some Trump people are claiming. I don't think I buy it. But we'll find out soon enough.