Bush's base didn't desert him, he deserted them when he picked Miers, packed in a horrendously expensive drug benefit for the wealthiest age demographic in the nation to buy votes with MY money, and flubbered around trying to reform Social Security when he should have produced a program to phase out that ponzi scheme.
Bush's base is conservative Republicans, and when he starts acting like a RINO to appease Democrats or avoid a fight, we'll "desert" him again by chewing his azz out!
I believe W has stayed pretty close to his campaign promises. You are the one who had hoped for someone else. Bush is what he is.