Joe Torsella

Joe Torsella is the latest Pennsylvania Democrat to yield to his party’s highest-profile recruit, Sen. Arlen Specter .

Torsella, the former head of the National Constitution Center in Philadelphia, pulled out of the 2010 Senate race late Thursday, noting in a Web video that Specter’s defection last month to the Democratic Party “transformed this election.”  

The campaign “probably would be negative, personal and more about Sen. Specter’s past than about our common future, and that won’t do Pennsylvanians any good,” Torsella said.