Media Bias 101: “Surveys over the past 30 years have consistently found that journalists — especially those at the highest ranks of their profession — are much more liberal than rest of America. They are more likely to vote liberal, more likely to describe themselves as liberal, and more likely to agree with the liberal position on policy matters than members of the general public.”

http://archive.mrc.org/static/uploads/MediaBias101.pdf

In 1981, S. Robert Lichter, then with George Washington University, and Stanley Rothman of Smith College, released a groundbreaking survey of 240 journalists at top media outlets — including the New York Times, Washington Post, Wall Street Journal, Time, Newsweek, U.S. News & World Report, ABC, CBS, NBC, and PBS — on their political attitudes and voting patterns. The data showed journalists hold liberal positions on a wide range of social and political issues. Lichter and Rothman’s book, The Media Elite, became the most widely quoted media study of the 1980s.