Watching C-SPAN, it's painfully apparent that about 80-90% of people leave after the voting. Romney had about 100+ people voting and I think about 10 people left to select just 3 delegates! Probably most of these people aren't even fully committed to having to take time off and show up at the county convention!
About 15 Ron Paul supporters stayed to select 1 delegate, and only about 2 people wanted to be a delegate. No alternates were selected.
So for those of you in caucus states, make sure you stay and everyone sign up as either a delegate or an alternate.
Also makes me wonder if other campaigns don't have committed delegates or alternates, if you can "step in" and sign up for them as a stealth delegate/alternate...
REMEMBER that no matter the results in the Iowa caucuses, that the Iowa caucuses are non-binding - no delegates are awarded.