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If 2012 was the presidential election in which data-driven journalism really came into its own, the 2016 Republican nomination contest has been the one in which the conventional wisdom has continually been shattered. Besides driving Republican officials to distraction, Donald Trump has been the bane of journalists from data geeks like Nate Silver and the New York Times’s Nate Cohn to more old school analysts like Ron Brownstein of National Journal. The former television star’s unorthodox background and brash demeanor has upended the conventional wisdom…