Newt and Callista Gingrich. (John Amis/Associated Press)

Also spotted: Gen. Petraeus dining with his daughter, Anne, at Dupont Circle’s Hudson Restaurant & Lounge on Monday night. The C.I.A. director ordered a watermelon salad, halibut, and picked fruit, plus an additional peach and kale salad with a side of tomato and basil. They stuck around for two hours.