Former House Speaker Newt Gingrich and his wife Callista wave after speaking to delegates during the Republican National Convention in Tampa, Fla., on Thursday, Aug. 30, 2012. (AP Photo/Lynne Sladky)

Photo by: Lynne Sladky

Former House Speaker Newt Gingrich and his wife Callista wave after speaking to delegates during the Republican National Convention in Tampa, Fla., on Thursday, Aug. 30, 2012. (AP Photo/Lynne Sladky)