So who runs, and how do they decide?

Bush has been a mentor to Rubio, who served in the state Legislature and rose to be Speaker of the House there. Does the mentor earn the right of first refusal?

It is unlikely that both Bush and Rubio could and would run in 2016. Many of their strongest supporters overlap, and key Florida donors would be forced into an impossible position to choose one friend over the other.

Perhaps most importantly, they would presumably not want to run against each other as they see the world the same way, deeply respect each other, and to some extent, share a policy record from their time in service to Florida…

Will the candidates meet privately and talk it through?