Video of Newt Gingrich weeping in Iowa in response to question from Frank Luntz about his late mother:

Luntz seems to have a gift for making candidates emotional: he was also the questioner at the Family Leader forum in November, when many of the candidates responded in an unusually personal vein. At that event, Gingrich talked about how he had become more reliant on God in his life, and Rick Santorum described a moment when he thought their youngest daughter, Bella (who has trisomy 18), was dying.