Good news for Trump, but not troubling for Hillary as long as he doesn't actually lead a PA poll ...
2% leads(4way) is nothing.
Because of turnouts.
Perhaps Hillary can't reach turnouts rate of Obama did in 2008,2012(especially Minorities)
as I said already, it is crazy, Democratic nominee couldn't gather 200 crowds in Philly rally.
http://www.breitbart.com/2016-presidential-race/2016/09/19/photo-donald-trump-draws-massive-crowd-far-more-than-hillary-clinton-in-florida/and TRUMP might boost turnouts of HS, Some college White(Men/Women both) in PA(especially Western PA Rust Belt)