I have 2 theories:
1) Obamacare premium hikes. Those hikes may have scared some undecideds to Trump's camp. Heck maybe even some of "weak" Clinton supporters may have switched sides because of it.
2) This could be a "spiral of silence" starting to make noise. Some of shy Trump supporters are now openly expressing support for Trump, even to a pollster when they probably would not have in the past. The reason for this maybe is because the hotmic tapes are now old news? They may have read some Wikileaks about Clinton?
No. Good lord, I wish people would stop over-analysing this. Some GOPhers are coming home, quite a few aren't. The undecideds are coming down from the fence, and the third parties are dropping. This is all marginal in the grand scheme of things.
Well this is no doubt the "October surprise" against Hillary's favor. It could hurt her, but not as bad as the hotmic did for Trump.
