Really?
Do I have to do all of the work for you? Really?
http://www.infoplease.com/us/census/data/iowa/demographic.html - Iowa Demographics
http://www.cnn.com/election/2012/primaries/epolls/ia - Iowa Entrance Poll
31-percent of voters in Iowa were under the age of 44. Roughly 35-percent of the population in Iowa falls into that age group. Now, consider that young people skew Democrat, and the difference between the expected turnout of voters under 44 compared to actual observed turnout was probably statistically insignificant, and if it was statistically significant, it had no impact on candidate placing or delegate counts.
http://elections.nytimes.com/2012/primaries/states/new-hampshire/exit-polls - New Hampshire Exit Poll
http://profiles.nationalrelocation.com/New Hampshire/ - New Hampshire demographics
There you see that about 37-percent of the population is aged 18 to 44. 31-percent of Republican primary voters fell into that age group. Now, consider that young people skew Democrat, and the difference between the expected turnout of voters under 44 compared to actual observed turnout was probably statistically insignificant, and if it was statistically significant, it had no impact on candidate placing or delegate counts.
See?