going to alter the direction of the party. It's easiest in caucus states, but possible in other states as well. It takes local people moving into the local Democratic Party organizations and assuming leadership roles. It's easier than you'd think in most cases.
The trouble is, for a lot of people, that you actually have to work at the job. That's asking too much for many folks, so the ones willing to do the work choose the candidates. Wonderful, huh? If you haven't been to a local Democratic Party meeting or caucus, I highly recommend doing so. See what it's like. You'll be amazed at how easy it would be for a small group of dedicated folks to assume control...if they're willing to put in the work.
If they're not willing, then they don't deserve the leadership. It is that simple.
A while back, I wrote an OP on that subject. It's in my journal.
http://journals.democraticunderground.com/MineralMan/23