Are you aware that Washington State held a primary in which three times as many people participated as participated in the caucuses?  And that Clinton beat Sanders?

The will of the Democrats in the state was not reflected in the caucuses.  It was reflected in the Primary vote.  The caucus was held on a weekend morning, at a single time, preventing many working people from participating.  Many people also avoided the caucuses so they wouldn't be yelled at by Sanders supporters.  When people had the opportunity to vote, and the freedom to do it in private, they supported Clinton.