Some here feel Gingrich would be best as first on the ticket and I disagree. Cain is the everyman and Newt is the politician. Put the everyman up there to communicate to the people- charting the vision and paired with the politician who understands how to maneuver through the bowels of DC, together they will succeed.
The VP is President of the Senate. Gingrich would be better there than Cain, IMHO. And I trust Cain to be for the people more than Gingrich would.