As he announced his migration to the Democratic party, Pennsylvania Sen. Arlen Specter said Republicans were veering too far to the right and specifically slammed the Club for Growth for running GOP moderates out of office. So how does the Club for Growth respond? What is their political mission? Are they costing Republicans seats in Congress? And why has Sen. Specter been a prime target of the Club for Growth? We ask David Keating, executive director at the Club for Growth.
