"But with polls showing the public losing faith in the ability of journalists to give the news straight up, some major newspapers and TV networks are clamping down. They now prohibit all political activity — aside from voting — no matter whether the journalist covers baseball or proofreads the obituaries. The Times in 2003 banned all donations, with editors scouring the FEC records regularly to watch for in-house donors. In 2005, The Chicago Tribune made its policy absolute. CBS did the same last fall. And The Atlantic Monthly, where a senior editor gave $500 to the Democratic Party in 2004, says it is considering banning all donations. After MSNBC.com contacted Salon.com about donations by a reporter and a former executive editor, this week Salon banned donations for all its staff.
What changed? First came the conservative outcry labeling the mainstream media as carrying a liberal bias. The growth of talk radio and cable slugfests gave voice to that claim. The Iraq war fueled distrust of the press from both sides. Finally, it became easier for the blogging public to look up the donors.
...The pattern of donations, with nearly nine out of 10 giving to Democratic candidates and causes, appears to confirm a leftward tilt in newsrooms — at least among the donors, who are a tiny fraction of the roughly 100,000 staffers in newsrooms across the nation."
But of course, we already knew that, as well as the people at UCLA.
"Our results show a strong liberal bias. All of the news outlets except Fox News’ Special Report and the Washington Times received a score to the left of the average member of Congress. And a few outlets, including the New York Times and CBS Evening News, were closer to the average Democrat in Congress than the center. These findings refer strictly to the news stories of the outlets. That is, we omitted editorials, book reviews, and letters to the editor from our sample." - A Measure of Media Bias, UCLA, 2004