Sen. Robert Menendez, D-N.J., the head of his party's campaign arm, said he has neither spoken with Matthews, a native Philadelphian, nor any intermediaries for him about a possible challenge to Specter.
The 62-year-old Matthews' contract with MSNBC expires in June. He has worked in Democratic politics before, running unsuccessfully for a northeast Philadelphia congressional seat in 1974 and working for former President Jimmy Carter and former House Speaker Thomas P. "Tip" O'Neill Jr.