Rubio vs. Bush Was Inevitable

Benjy Sarlin: “Rubio, who has steadily improved in the polls since the last debate, is looking more and more like a threat to win the nomination as Bush’s campaign fails to reach escape velocity. Recognizing the danger, Bush has started to raise pointed questions about his old friend’s qualifications, portraying him as a promising protégé who needs more time in the minor leagues. Their jostling will likely determine who carries the establishment banner against Trump and outsiders like Ben Carson, Carly Fiorina, and Sen. Ted Cruz.”