McCain 08 is certainly no McCain 00, or even McCain 04. Without his political integrity, his bipartisanship reputation, and his honesty, McCain has nothing of value as a politician. He has no economic expertise, and a completely dead-wrong world-view on foreign policy. He has now surrounded himself with lobbyists and campaign strategists that he was famously against in the past.
Problem with McCain right now is that he can't even dress up a lie. He would tell you he suspends his campaign because he "wants to fix the economy"; or Palin being the "best energy expert"; or Obama's tax policy would raise tax the middle class. etc. McCain is tainted by being within closed proximity to George Bush and his groupie. Above all else, bold-face lies is something that I can't stomach.
McCain needs the support from religious base, and the backing from the lobbyists. He is willing use gambits to satisfy his ambition, to win the election at all cost. The Palin VP pick reveals that his only goal is to be elected, not to govern. However, I don't think it is completely up to him to become what he is today. He knows he cannot win running an honest campaign. And so it is, he becomes another victim to the two party system political theater of America.
RIP, the true Maverick McCain.