Two years after 9/11, "7 in 10 Americans continue to believe that Iraq's Saddam Hussein had a role in the attacks" from a Washington Post polldubljay said:Can you show me a statistic on that? Iraq may have harbored those who commited the attacks but Iraq being directly responsible?
That's where I got that from. (well, my memory of the exact number was hazy until I looked it up when you asked. But now we both know with more precsion.)
In a similar vein (and more recently) Program on Internation Policy Attitudes poll [pdf] shows that "72% of Bush supporters continued to hold to the view that Iraq had actual WMD (47%) or a major program for developing them (25%)." This is after the chief weapons inspector Charles Duelfer reported to Congress & David Kay testified to the Senate that there was no major 'weapons of mass destruction' program and no evidence of sstockpiles of weapons in pre-invasion Iraq.