Could he be running mate material?
Doubt it. Too risky after the Palin fiasco in 2008. You don't want a VP candidate who at any point could utter something tremendously stupid and ignorant to derail your campaign.
I'm predicting it now, Haley, Portman, Sandoval, Cruz or Christie will be the VP candidate (irregardless of nominee)
If Trump wins, Cruz seems likely.
If Rubio wins, Kasich or Portman seems likely.
If Cruz wins I have no freaking clue.
If Bush wins, Haley or Portman would be good.
If Carson wins, we're all screwed.