Possibly a bit harsh, but amusing nontheless:

Neal Starkman of the Seattle Post-Intelligencer discusses Bush's popularity:

The answer, I'm afraid, is the factor that dare not speak its name. It's the factor that no one talks about. The pollsters don't ask it, the media don't report it, the voters don't discuss it. I, however, will blare out its name so that at last people can address the issue and perhaps adopt strategies to overcome it. It's the 'Stupid factor,' the S factor: Some people -- sometimes through no fault of their own -- are just not very bright. It's not merely that some people are insufficiently intelligent to grasp the nuances of foreign policy, of constitutional law, of macroeconomics or of the variegated interplay of humans and the environment. These aren't the people I'm referring to. The people I'm referring to cannot understand the phenomenon of cause and effect. They're perplexed by issues comprising more than two sides. They don't have the wherewithal to expand the sources of their information. And above all -- far above all -- they don't think."

thanks to "eye on the left"