If you stop and visualize Philadelphia, what first comes to mind might be some stereotypically masculine imagery: Rocky running up the steps of the art museum, burly guys tearing into cheesesteaks, Eagles fans booing Santa Claus. So it may come as something of a surprise to you that one thing Philadelphia—or more precisely, Pennsylvania’s 2nd congressional district, which takes up about half of the City of Brotherly Love—leads the way in is unmarried women. That’s actually important, from a political standpoint: unmarried women are a key Democratic constituency.