Bias beyond a reasonable doubt
Yes, the media are overwhelmingly liberal
|...The question is, Who is right? Is there a left- or right-wing bias, or have the media actually managed to be objective? A serious assessment requires quantification of the output put forth by the media. The best analysis I know along these lines is the ongoing study "A Measure of Media Bias," by professors Tim Groseclose of UCLA and Jeffrey Milyo of the University of Missouri.
These researchers use a clever statistical technique to construct an objective measure of conservative or liberal bias in the news coverage of major U.S. television and radio stations, newspapers, magazines, and the Internet. Their main finding is that the liberal inclination of the mainstream media is clear. Among 20 major outlets, Fox News and the Washington Times emerge as conservative, but the other 18 range from slightly to substantially left of center.
Groseclose and Milyo's analytical method begins not with the media but with the voting records of members of Congress...