More background information.
Newt Gingrich Biography - Biography.com
Judging by everything I've read thus far, I would think logically Cain/Gingrich is the order they should run.Gingrich was seen as the architect of the victory, especially noted for helping draft the “Contract with America,” a document outlining legislation to be enacted by the House within the first 100 days of the 104th Congress. Among the proposals were tax cuts, a permanent line-item veto, and a constitutional amendment requiring a balanced budget. In December 1994 Gingrich was chosen by the majority Republicans as House speaker, and he assumed the office the following month. With one exception, all parts of the “Contract with America” were passed by the House.