Former presidential hopeful Herman Cain stumps in Tulsa on behalf of Newt Gingrich. Speaking at Joe Momma’s Pizza downtown, Cain talked about energy prices and Gingrich’s plan to return to $2.50 a gallon gas. Gingrich has made cutting the price of gas a centerpiece of his campaign.

The '$2.50 Gas Tour' included Cain, former Congressman J.C. Watts, and Gingrich’s daughter, Jackie Gingrich Cushman.