Remember the IA straw poll when Huckabee won amongst the people at the poll but lost in the overall poll because the Romney camp whipped up support at the poll and on the Internet? The Huckabee camp, which apparently wasn't aware of the option to use the Internet to get votes in addition to the votes cast at the poll, was reduced to sputtering about how Romney was "cheating within the rules." You just don't win elections overlooking such things and all indications are that his campaign still hasn't gotten it's act together yet. If it hasn't, Romney wins IA.
You have a good point on the organization factor in Iowa.
Mitt Romney leads among men with 28%, followed by Mike Huckabee with 23%, John McCain with 11%, and Fred Thompson with 11%. Among women, Romney leads with 37%, followed by Huckabee at 23%, McCain at 11%, and Rudy Giuliani at 9%. 21% of likely Republican caucus participants remain undecided of say they could change their minds before January 3.
What pops out at me is that 37% of the women support Romney. On the other hand, Fred Thompson by extrapolation garners only 3% among the ladies. McCain and Huckabee have equal support between the sexes.