Anti-science activities are playing an increasing role in American conservatism. The biggest example is the advocacy of Intelligent Design: a direct attack on a basic scientific theory because religious ideology demands it. This political and religious opposition to evolutionary theory (there is no scientific opposition to it) is made up exclusively of conservatives. The question is, will the anti-science attitudes of conservatives come to hurt them later?
Conservatives have often prided themselves on adhering to a very practical and realistic political philosophy, but a practical political philosophy is one that deals with reality as it is rather than as we wish it would be. Conservatives like David Frum -- who says he accepts evolution but opposes teaching it in school because it "offends" some -- do exactly the opposite: they favor teaching comfortable falsehoods if the facts are too inconvenient.
The immediate focus and target of defenders of Intelligent Design is evolution; the long-term target is, they admit, is methodological naturalism and materialism in science. Their ultimate goal, which they only rarely admit to openly, are reason and modernity themselves. It's a political agenda that seeks to replace secular politics and science with a theocratic regime based upon conservative, evangelical Christianity.
Fundamentalists and conservative evangelicals view pretty much everything political, social, or religious through the lens of their "culture wars." They are the persecuted church which gospel texts have Jesus predicting and teaching about. They may control most of the levers of political power around the nation, but they have failed to capture enough hearts and minds in order to mold American culture according to their desires. There must be a reason for this and the most common "solution" is that the forces of Satan continue to have the upper hand.