These results are from the new Fairleigh Dickinson University Poll -- done between September 28th and October 2nd of a random national sample of 862 registered voters, with a 4.4 point margin of error. It has Hillary Clinton with a 10 point lead over Donald Trump when third party voters are figured in.
The question, of course, is whether this poll is an outlier -- since it gives Clinton a larger lead than most other recent polls (most of whom give her about a 5 or 6 point lead over Trump). It could be. But it should be noted that Nate Silver, the respected poll analyst, gives the Fairleigh Dickinson Poll an A+ rating for being accurate and unbiased.
It will be interesting to see if the vice presidential debate will have any effect on the polls in the next few days. I suspect it won't have much effect. It was only watched by about half the number that watched the first presidential debate, and I think most of those viewers already had their minds made up, and just tuned in to root for their favorite.
But I could be wrong. We shall see.