According to this article Mac is leaning toward Romney, for the good reasons of executive competence and fundraising prowress. The arguments against him are the same--McCain doesn’t really like him, the Mormon issue, and he’s too standard a choice in times that call for audacity. Bobby Jindal apparently is not mentioned by McCain insiders, because he would call attention to Mac’s age. The only new name is South Dakota’s Senator Thune. As far as I know he’s a solid and somewhat boring guy, but I don’t know very far.