Working class voters in Pennsylvania, Ohio and Michigan

“In yielding Pennsylvania to President Obama, Romney has raised the stakes in Ohio and Florida, almost certainly making both states must win contests if he is to reach 270 Electoral College votes. Real Clear Politics has Obama ahead by a 1.9 point average in the eight most recent Florida polls and by an average of 4.1 percent in the seven most recent Ohio polls.”

http://campaignstops.blogs.nytimes.com/2012/09/23/whats-wrong-with-pennsylvania/