Jeb Bush has said he will not run in 2008. But that does not rule him out as a vice presidential candidate. If McCain won, Jeb would be the No. 2 to a president who will turn 72 on Aug. 29, 2008, and might well serve only a single term. If McCain lost, Jeb would have enhanced national recognition for a run in 2012. If picking Jeb is the price of winning over George W., McCain will pay it.