How the Caucuses Work--ALL GOP members vote
I think there might be some misunderstanding about how the caucuses work. ALL people who are registered Republicans can vote in the Iowa Caucuses. I'm not sure on the specifics of if they have to register before or can just show up and say they're Republican, but the important thing is pretty much everyone in the state who is over 18 and a US citizen, and who is willing to join the GOP, can vote in the caucuses.
The "delegates" are chosen AT the caucuses. Each precinct gets a certain number of delegates to go to the next round (the county or regional convention, then the state convention, then the national one in Minneapolis) based on the turnout in the precinct. The list you guys have been calling is probably the delegates from last time, I would imagine. These people, you are right, are very important, as they were willing to commit the time to be delegates last time, and are probably big-wigs in their local, if not state-wide, GOP committees.
However, it is important to remember that there are thousands and thousands of other people who will vote in the GOP caucuses. On that note, I would be willing to help make phone calls and even write letters to Iowa GOP members. I emailed Jason Stoddard the other day and haven't received a response. Anyone know what's the latest on the Iowa organizing effort?