Obama is giving us a genuine shot at reversing the damage progressivism has done in the last hundred years. He's like chemo therapy. With any luck, he'll kill progressivism before he kills us.
Which leads to an interesting conundrum: if Bush "paved the way for Obama," did he also pave the way for reversing the damage of progressivism?
(Just illustrating how a weak causal argument can be made even weaker).