Why he might be:
[Rick Perry is] a career politician who, as far as I can tell, is as wildly ambitious as any of them. He wants to be President of the United States not because he sobered up one day and decided to go into his dad's business, but because as a career pol it's the top of his profession. That's good; he's a lot less likely than Bush was to give up on the job, or not care what voters thing. He — like Romney — appears to have little problem adjusting his positions in order to secure political goals. I like that too; true believers worry me a lot, even if I agree with their policy positions.