Maybe this is all a ploy and McCain will have "his vice-presidential nominee" with him, but won't announce who it is among a group.
Was watching MSNBC a couple nights ago during the DNC, and they were saying how McCain in 2000 was going to throw the VP nod to the floor of the Convention. Maybe McCain is going to get a group of people together in Dayton, and the Convention can decide among them for who will get the VP slot.
That wouldn't be smart, that will split the convention. Right now I say it is one of these three; Ridge, Lieberman or Palin. The first two would be great for Obama the last one will be grat for McCain.