Gingrich's Other Opponent: Who Is Saul Alinsky?

 Republican presidential hopeful Newt Gingrich, with his wife, Callista, delivers remarks Sunday during a rally with senior citizens at The Villages retirement community in Lady Lake, Fla.
Republican presidential hopeful Newt Gingrich, with his wife, Callista, delivers remarks Sunday during a rally with senior citizens at The Villages retirement community in Lady Lake, Fla.