Trump will pick Jeff Sessions. It’s a close call. The bookies are divided between Sessions and Gingrich with lower odds on Christie and Kasich. Bob Corker has recently been added to the short list by CNN, although the bookies have him ranked lower than the rest.
You can argue until the cows come home who Trump should nominate. I originally said he would pick Joni Ernst, but she’s out based on her recent comments. Trump will win most southern states, so Corker and Sessions don’t bring much to the ticket.