(Sigh... one more time...)
Caucus attendees generally to not know anything about the delegates they elect to the county assemblies; and this is only the first level of delegates in a multilayer system. At each level, people generally do not know anything about the people they are electing as the next level's delegates. By the time you get to the delegates going to the national convention, the correlation between the intent of the caucus attendees and the national convention attendees has become pretty-much random, and subject to corruption at multiple points along the way.
Oh bullshit.