Because it’s his turn?
All the Democrat media says it will be Jeb v. Hillary, so even a broken-down nag such as Hillary will be able to win this race. The RNC specializes in backing yet another Loser for the GOP..
Bush has a lock on the sources of campaign money. Reckoning it will be a billion plus dollars to even RUN a campaign, the first guy who gains the favor of the big-money guys is the eventual winner of the NOMINATION.
But there is easily a billion plus dollars already committed to getting Herself, Madame Benghazi, the Cold & Joyless, in line for the coronation, and this Republican chase after dollars is an exercise in futility.
Selection of a President is no longer a matter of merit.