It's not clear to me when the window closes. I'd say some time in the fall, late fall if there is no clear front runner (and Mitt will not count as a GOP front runner even if, God forbid, he gets the nomination a year from now).
I think Sarah Palin entering the race early will help eliminate guys like Huntsman, Gingrich, and Pawlenty.
While I’m not a fan, I was actually kind of impressed with Santorum’s answers to Glenn Beck yesterday. He actually seemed to have paid attention to Obama’s bashing of America during the 08 election. There’s something wrong when a man can bash the country he’s running to lead.
On the other hand, Santorum showed a big government bent when talking about the fed.