I’m not sure. Maybe State Dept.
For a time, I thought Gingrich was in this to promote himself. in terms of book sales, appearances, and so forth, but he is doing very well in these debates. Romney would have to name an evangelical to the ticket to shore up the base. Why not Herman Cain? Cain would not have to worry about the base, but might need somebody with the credentials of Gingrich for VP. Continuing with this thinking: With Cain/Gingrich, I figure Huntsman for State and Romney for Treasury.