Cognitive Dissonance or Moronic Ineptitude?

Asked whether the US should have gone to war with Iraq if US intelligence had concluded that Iraq was not making WMD or providing support to al Qaeda, 58% of Bush supporters said the US should not have, and 61% assume that in this case the President would not have. Kull continues, "To support the president and to accept that he took the US to war based on mistaken assumptions likely creates substantial cognitive dissonance, and leads Bush supporters to suppress awareness of unsettling information about prewar Iraq."

Hellblazer gets credit for turning me on to this stunning collection of statistics detailing the extent to which most Bush supporters are severely deluded.

Sadly, I actually know at least a few Bush supporters and to my supreme amazement, they are generally intelligent people. They're caring people who are good at their job, can hold a conversation, even exchange moderately witty banter on occasion. So what the hell are they doing supporting Bush?

I have theories but certainly not the answer. If you figure it out, please let me know. Thanks.