GOP hopeful John Spencer readies ad claiming party rival Jeanine Pirro is too liberal in race to challenge Hillary Rodham Clinton ALBANY -- With more than a year until the 2006 U.S. Senate race, one Republican seeking to challenge Democratic incumbent Hillary Rodham Clinton is already gearing up to hit the airwaves. Advertisement Former Yonkers Mayor John Spencer's campaign Thursday released copies of a television ad attacking Westchester County District Attorney Jeanine Pirro, the state GOP leadership's favored U.S. Senate candidate, for being too liberal. The ad, which Spencer's camp said will start airing statewide on cable stations Monday, points...