Meghan McCain Rips Gingrich's Wife For Being A 'Mistress'... As Adultery Website Endorses Newt By THOMAS DURANTE 21st December 2011 As questions about Newt Gingrich's past infidelity have hit him in the polls, one GOP mouthpiece warns his current wife may cost him the presidency. Fightin' words: Meghan McCain, the daughter of Sen John McCain and MSNBC correspondent, targeted Callista Gingrich in a bizarre attack Meghan McCain, the daughter of Sen John McCain, a blogger and MSNBC correspondent, targeted Callista Gingrich in a bizarre attack today. Callista is Mr Gingrich’s third wife, and it has been revealed that she and...