I like Thune and donated in his first Senate attempt, but he doesn’t add any popular votes from a swing state, or a significant constituency.
I think the stealth choice would be Gen. Petraeus.
Obama team can’t criticize him, because they kept and endorsed him.
The fact the dems can’t fire at him, may be worth more than swing states or voting blocks.
If those 2 considerations reign, then the only choice is Rubio.
As for me, if Rubio, Jindal, or any other person with similar heritage factors is selected all the case/arguments against Obama’s eligibility gets thrown under the buss or out the window. Surly there are choices that avoid such a folly. Lt. Col. West is such a choice for me.