Please, get your facts straight. Woodward came out against the CIA leak investigation and said he thought Fitzgerald was on a witch hunt months ago on Larry King Live. The Bush Administration has been good to Woodward and has provided him with access to Cheney and all other Administration officials for three or four books that Woodward has already written on the Bush Administration. Bush, himself has set down with Woodward and given him three or four hour interviews. Woodward is now writing a book on Bush's second term, I doubt he wants to wants to jeopardize his access in a vain attempt to score another Watergate victory. He sat on his knowledge of who was leaking Plames name at the White House for several years and didnt even tell his Editor. I think you are wrong. Bernstein is the way out liberal. Woodward had Republican parents, was a navy officer, and was an intelligence briefer to the General that was Nixon's final chief of staff. He is likely a moderate but not a liberal.
As to Woodward's bias, I agree that he doesn't have a strong political bias except this: Woodward is always out for Woodward and would run over his own mother and interview her in her coma in order to advance his career.