Iowa has 27 delegates. Each candidate receives a portion of delegates based on his/her percentage of the total statewide vote.
Example: Trumps gets 30% of the statewide vote. .30 X 27= 8.1 . Trump gets 8 delegates
More info here...
http://www.thegreenpapers.com/P16/IA-R
All this weeping and wailing and gnashing of teeth for a handful of delegates? Sheesh.
thanks!