With Pennsylvania's upcoming contest looming (April 22), attention has turned to winning over one of the state's crucial religious blocs. No, its not the Quakers, but the Catholics who are being courted by Obama and Clinton. Recent polls have Clinton leading among Catholics, but Obama is not conceding this crucial Keystone constituency. Some are speculating that Clinton's lead might be due to an overlap with other traditionally Catholic demographics in her base such as Hispanics and bluecollar voters. Nevertheless, Obama is trying to cut into this lead with Catholic surrogates touting his credentials.