That’s this poll. The other polls are showing her gaining.
You always seem very concerned. Google Analytics and Morning Consult also found Trump gaining.
You seem more concerned about polls that show him ahead?
“Other polls,” like the rigged Reuters one; see:
http://www.zerohedge.com/news/2016-09-29/how-reuters-tweaked-its-latest-poll-show-clinton-lead
And other polls showing she did not gain a thing.
It boils down to turn out. Pollsters have to make their best guess about who is going to show up and vote. So they weight their polls X% D, X% R, X% independent. Traditional polling relys on turn out from the last election to create their sample. That is why polling is all over the place. Everyone is trying to figure out who is going to show up.