ERIE, Pa. — Lt. Gov. John Fetterman, the Democratic nominee for Senate in Pennsylvania, returned to the campaign trail on Friday evening for his first major public event since he suffered a stroke in mid-May.
Mr. Fetterman was by turns emotional and brash as he addressed an exuberant crowd, acknowledging the gravity of the health scare he faced while also slamming his Republican opponent, Dr. Mehmet Oz, the celebrity physician, and pledging…