Did it ever occur to you that people often don't vote based on "the war"?
Were you asleep in November?
This is a thread concerning "Presidential candidates" not "legislative candidates". Results in 2006 therefore are quite irrelevant to jfern's specific point and my pointed response.
I, and probably most political experts, strongly disagree that the 2006 election results are irrelevant when discussing the 2008 presidential race. However I will offer some more evidence for you in the form of presidential results. Please see the election results of 1968 and tell me that Vietnam wasn't the number one issue when voters elected Nixon over the sitting VP. The war is and will continue to be the most important issue in 2008. If this poll is taken as an accurate portrayal of Republican sentiment in Iowa then I would expect Brownback and Hagel to begin rising quickly once people figure out who they are.