Caucuses are time-honored traditions that worked well until the foreign candidate you support did poorly in them. Cheaper and easier to do than primaries, and supposedly a check and balance- if you've got the support of people fired-up to hit caucuses, and can win in primaries, you're in good shape, no?
You're telling me Clinton didn't have any supporters who were fired up enough to participate in caucuses? From what I've seen around here, she had plenty. She played the game badly and lost, for all the money she spent and talented people supposedly on her campaign.