Would be a great VP candidate but I don't know if he would be a good POTUS candidate. I would love to see him run because I think the debates would be about real issues and the nominating process would lean conservative (knocking out Rudy and McCain).
The liberal media would slice him and dice him up if he became the nominee. He has a lot of tough baggage from Congress and the liberals would try to get conservatives to sit on the sidelines the way he divorced his ex.
Would be a great VP candidate but I don't know if he would be a good POTUS candidate.
I see him more in the role Rove is now playing. Newt combines a sense of strategy with an ideological approach more grounded in Reagan conservatism.