McCain: 43%
Obama: 38%
Nader: 3%
Undecided: 16%
This Rocky Mountain Poll is based on 401 interviews with Maricopa County voters, conducted between July 18 and 24, 2008. Where necessary, figures for age, sex, race and political party were weighted to bring them into line with their actual proportion in the population. In a sample of this size, one can say with a 95 percent certainty that the results have a statistical precision of plus or minus 5.0 percent of what they would have been had the entire population been surveyed. The Rocky Mountain Poll is conducted by the Behavior Research Center of Arizona and is an independent and non-partisan research program sponsored by the Center.
http://www.brcpolls.com/08/RMP%202008-III-01.pdf...
In 2000, Maricopa County was about 4.1% more Republican than AZ as a whole, in 2004 it was 4.2%.
