She, as Vice President, would nullify his message as changing Washington.
She would also unite the Republican Party behind McCain.
I think Obama is going to try to win the Southwest as the route to the White House, and may put Richardson on the Ticket.
Also with Hillary as VP, Obama would be a 'dead man walking'.
I think a combined ticket would be seen as a “unifying gesture”.
With all the talk about change, having a white female and an Afro-American male on the ticket would be about as much change as you can get.