A Measure of Media Bias

The Quarterly Journal of Economics will be publishing Groseclose and Milyo's A Measure of Media Bias. While not freaky, the methodology is pretty cool. He starts with the ADA (Americans for Democratic Action) scores to measure the political ideology of members of Congress. Assuming members of Congress will cite think tanks with similar ideologies, it then becomes possible to assign think tanks ideologies. Then it becomes possible to determine the ideology of media outlets by what think tanks they cite.