Let us review the most recent occasion an insurgent won the Democratic nomination against bitter and organized establishment opposition. It was 1972 and George McGovern, caretaker of the Kennedy delegates after California in 1968, had been given the party rules committee slot that would have gone to RFK and, failing that, should have gone to Gene McCarthy. In the 1972 primaries McGovern used his knowledge of the rules to defeat the presumptive nominee, Hubert Humphrey, with an outbreak of enthusiasm Humphrey could hardly understand, much less emulate.
But then at the convention he tried to reach out to the establishment wing of the party by nominating a labor hack, Tom Eagleton of Missouri, as his running mate. It was a sickening blow that the old politics delivered straight to the reform breadbasket. It also showed that McGovern did not have the strategic cunning or the tactical brass to dance with who brung him.