The interesting thing was that Alan Colmes raised the very objection you did.
The gentlemen who hosted the HowObamaGotElected.com site offered Colmes a challenge: that if Colmes commissioned his own identical Zogby survey of McCain voters, he would not get the same ignorance, or he would double Colmes’ money.
Colmes refused to accept the challenge, even after the HowObamaGotElected guy modified his challenge to FRONT the money for Zogby survey with the proviso that Colmes pay double back if he lost.
Blind voting Democrats, knowledgeable or not, coupled with the idiots on the left who don't know what year their own nation was attacked make up his base.
The left's source of NEWS are NPR, The Colbert Report, The Daily Show, MSNBC with all other MSM outlets including major city newspapers only slightly more informative and slightly less entertaining!!
God help the USA!!