The west PA Pittsburgh region is big union and usually goes for Dems. Philly almost always is largely in the Dem camp. I dont’ see the unions not voting for Obama.
I think that’s the reason that Obama came out in support of the natural gas in PA, because his anti-coal-anti-industry stance wasn’t playing well with some of the union members.
Here in WA State, a lot of the union members have abandoned Obama and joined the GOP because of his reliance on the Green Agenda.
You know all those white male blue collar workers that they keep saying Obama lost? Well I found them, in the WA state GOP, voting Anyone But Obama.