Less than a week after he officially got in, former Lt. Gov. Mark Singel has dropped out of the race for U.S. Rep. John P. Murtha’s seat. Mr. Singel cited a need for the Democratic Party to unify as a reason for departing, leaving as the clear favorite Mr. Murtha’s former district director, Mark Critz, who earned the endorsement of Mr. Murtha’s widow, Joyce, Thursday.
















