Personally I think the ideal ticket for winning is a Santorum/Gingrich ticket.
The sooner they come together and announce it the better.
Or, why not put experience at the top of the ticket: Gingrich/Santorum?
Rick's young, with little leadership experience. He could learn a lot and earn some "gravitas" under Newt's tutelage and actually be ready to assume the mantel in four or eight years.
Just thinking out loud .... hoping it helps others think, too :)