it was almost the end of my life, and it s changed my life since then. reporter: his surprise appearance at the pittsburgh campaign office brought a smile and sense of relief to gladys. it was great to see him. he was, you know, he just looked so vibrant, like he really came through all of those difficult health problems. have you been wondering how he s been doing? yes, i have. reporter: while oz is seeking to capitalize as his celebrity as a tv doctor, some republicans wonder if he s taking advantage of fetterman s absence. pennsylvania is our home. and it s worth fighting for. reporter: from afar, fetterman is badgering oz for moving to pennsylvania. after living in new jersey for more than three decades. flying a welcome home banner