http://www.nationalreview.com/article/375161/marco-rubios-jeb-problem-eliana-johnson
Marco Rubio’s Jeb Problem Would a presidential run by his mentor lock Rubio out of the race? By Eliana Johnson
A decision by Jeb Bush to jump into the 2016 race would presumably make him, in an instant, the establishment front-runner. It could also have an enormous impact on his fellow Floridian Marco Rubio, whose political career Bush has nurtured from its inception.
A Bush run would create both personal and political obstacles for Rubio. It would either force him to defer a 2016 run entirely or put him in the uncomfortable position of campaigning against a longtime friend and political mentor.
Several Republican political analysts say they have difficulty imagining that Rubio will launch a presidential bid if Bush decides to enter the race. That’s something that, according to a recent Washington Post report, many of Mitt Romney’s major donors are urging Bush to do. If Jeb gets in the race, “then I think Rubio does not,” a top Republican strategist tells me. A Bush run, says another, “would complicate things for Rubio pretty severely.” Ana Navarro, a GOP strategist and a friend of Bush’s and Rubio’s, is more direct: “I cannot see Jeb and Marco running against each other.”
Some say that, if Bush decides to run, the Republican establishment will put pressure on Rubio to wait his turn. “This is the one window of opportunity for Governor Bush, and Senator Rubio will have many windows of opportunity in the future,” says American Conservative Union (ACU) president Al Cardenas, who served two terms as chairman of the Florida GOP when Bush was governor and Rubio was a state representative.
Others, though, including some who know them both, say the men will make their decisions independently. “I don’t think Jeb’s decision is going to hinge on who else is running,” Navarro says. “I suspect the same is true for Marco. The decision has to come from within them.”