Nailed it. I've got an essay about this at my homepage: WHY DO WE HAVE SCIENCE AND EVOLUTION THREADS? Excerpt:
One of the great un-exploded myths of the 20th century is that the left is the natural home of intellectuals. The democrats -- notwithstanding their socialism, the Kyoto treaty, and countless other idiocies -- love to pose as intellectually superior. It's standard policy for them to claim that Republicans are morons, dunces, rednecks, etc. The "Republicans are anti-science" issue is one that the liberal media are eager to exploit. The presence of science threads on this website -- a very popular and highly visible website -- is beneficial in breaking down this absurd stereotype. We demonstrate that many conservatives are educated, literate, and deeply committed to the advance of science -- a rational enterprise which is a core value of Western Civilization.