The answer is thus: The polls are crap!
The pole ....uhm....fence
I don't blame the fence, I blame the fence builder...i.e...the Media machine of the left. The Mainstream Media outlets are pro-Democrat apologists...nothing more...they are not 'news reporting agencies'. Not really...they are 'news creating propgandists'. They all say the same thing, because they all think the same way and are all in coordination with each other to affect a particular political outcome. You don't see that I guess.