Republican presidential candidate, former House speaker Newt Gingrich, right, and his wife Callista serve drinks to children during at campaign stop a Adams Street Espresso in Creston, Iowa, Friday, Dec. 30, 2011. (AP Photo/Charlie Riedel)

Photo by: Charlie Riedel

Republican presidential candidate, former House speaker Newt Gingrich, right, and his wife Callista serve drinks to children during at campaign stop a Adams Street Espresso in Creston, Iowa, Friday, Dec. 30, 2011. (AP Photo/Charlie Riedel)