How can this be? Well, an analysis in the New York Times by Washington correspondent Nate Cohn gives a good explanation. "Democrats often blame gerrymandering, but that's not the whole story," Cohn writes. "More than ever, the kind of place where Americans live -- metropolitan or rural -- dictates their political views. The country is increasingly divided between liberal cities and close-in suburbs, on one hand, and conservative exurbs and rural areas, on the other. Even in red states, the counties containing the large cities -- like Dallas, Atlanta, St. Louis and Birmingham -- lean Democratic."