The respondents are overwhelmingly white (81%), older (72% are 45 or older), self-identified more conservative (38%) than liberal (21%) who voted for Bush over Kerry 49%-42% (a wider margin then the election results) and some of the questions are skewed by most reasonable survey standards. (
survey - pdf)
That being said, it is one survey among many, and from a partisan source.
I dont see how the conclusions of one survey signifies
"a committment of ordinary Americans to finishing our mission in Iraq" (btw, respondents also overwhelming (63%) support direct talks with Iran)any more than other surveys that suggest most Americans dont support the surge but are open to other options to "finish the mission" and still others where a majority say its time to brng the troops home.
I would encourage people who are interested in surveys on Iraq to look at more than one for a broader "snapshot of opinions" for what they are worth.
Polling Report has the frequent surveys by AP, USA Today/Gallup, CBS News, Pew Research Center,