Third and Long Lynn Swann's substance-free campaign. by Salena Zito Pittsburgh LYNN SWANN, Republican candidate for governor of Pennsylvania, walked into the room and instantly owned it. He was among five hundred or so guests attending a March fundraiser for Senator Rick Santorum with George W. Bush as the headliner. But it was Swann who was the man of the moment, rubbing elbows with Pittsburgh's elite in the tony suburban neighborhood of Sewickley, where he happens to live.