http://www.breitbart.com/2016-presidential-race/2016/10/04/pennsylvania-poll-clinton-leads-trump-47-percent-to-38-percent/
Why? It sampled 813 people. Only 496 are likely voters.
So, only about 60% may vote. It's got an error margin of 6%.
Instead of a massive lead, it may be only 47 - 44.
And, it included people not even voting moron.
This poll is freaking useless, other than propaganda.
You ate it up like an eager dung beetle.