David Wasserman: “An overlooked key to Mr. Trump’s 2016 upset was the Republican primary system, which winnowed the 17-candidate field quickly and gave Mr. Trump a head start at jackhammering away at Hillary Clinton.”
“By contrast, the Democratic Party’s egalitarian-minded rules allocate all pledged delegates to its convention on a proportional basis: A presidential candidate who receives at least 15 percent of the vote in any state or congressional district receives a corresponding share of delegates, making it difficult for a leading candidate to become a runaway train. In fact, had the 2016 Republican primary played out under Democrats’ rules, it would have almost assuredly resulted in an ugly, contested convention.”

