"I’m either a hero or a bum — and, really, I’m neither."

Wisconsin state Sen. Timothy Cullen, a Democrat, quoted by NPR in a piece about partisan divisions in the state, which voted to keep Gov. Scott Walker, a Republican, in office in a recall election yesterday. Across the nation, partisan polarization has surged in recent years, according to results from a major new study of American attitudes from the Pew Research Center.