The 37 indictments were the classic strategy of getting small fry who are designated fall guys so the big fish could get off scot free.
Political party establishments "rig" primaries all the time to control popular influence, the literature on political science says that it's what they've been doing in various ways since primaries started.
well Nate ascribes to "The Party Decides" theory of nominations, based on this book
in which the authors state that its the unelected party officials that steer the nominations
How true it is in today's environment is anyone's guess, but that's why he weights