Callista Gingrich has, I suspect, given Newt's advisers a giant headache. She's a constant presence at her husband's side - and a constant reminder of his acknowledged infidelity. Newt cheated on his second wife with Callista, a woman 23 years his junior.
Cheating on a quiz show? That's sort of like plagiarizing a comic strip.
The husband and wife are one, and that one is the husband.
Many marriages would be better if the husband and the wife clearly understood that they are on the same side.