Here's the rest of the article you cited, Hank...in case someone may want to read more than just the couple of paragraphs you cherry picked http://en.wikipedia.org/wiki/Media_bias_in_the_United_States
Self-described as "the first successful attempt at objectively quantifying bias in a range of media outlets and ranking them accordingly, a study by political scientists Tim Groseclose of UCLA and Jeff Milyo of the University of Missouri at Columbia. The study's stated purpose was to document the range of bias among news outlets. The research concluded that of the major 20 news outlets studied "18 scored left of the average U.S. voter, with CBS Evening News, The New York Times and The Los Angeles Times ranking second, third and fourth most liberal behind the news pages of The Wall Street Journal, while only the Fox News "Special Report With Brit Hume" and The Washington Times scored right of the average U.S. voter." The study also identified the Drudge Report as "left of center". In this study, "left" and "liberal" are treated as synonyms, and are identified with think tanks cited by Congressional members of the Democratic Party, while "right" is identified with think tanks cited by Congressional members of the Republican Party. The report also states that the news media show a fair degree of centrism, since all but one of the outlets studied are, from an ideological point of view, between the average Democrat and average Republican in Congress. This may be because organizations perceived to be extremist may have difficulty getting access to news material such as interviews.
The study met with criticism from many outlets, including the Wall Street Journal, and Media Matters. Criticisms included:
Different lengths of time studied per media (CBS News was studied for 12 years while the Wall Street Journal was studied for four months).
Lack of context in quoting sources (sources quoted were automatically assumed to be supporting the article)
Lack of balance in sources (Liberal sources such as the NAACP didn't have conservative or counter sources that could add balance)
Flawed political positions of sources (Sources such as the NRA and RAND corporation were considered "liberal" while sources such as the American Civil Liberties Union were "conservative".)
Mark Liberman, a professor of Computer Science and the Director of Linguistic Data Consortium at the University of Pennsylvania, has argued that there were a number of statistical flaws in this study. According to Professor Liberman, the model chosen leads to "very implausible psychological claims, for which no evidence is presented." He argued that "many if not most of the complaints directed against G&M (Groseclose and Milyo) are motivated in part by ideological disagreement – just as much of the praise for their work is motivated by ideological agreement. It would be nice if there were a less politically fraught body of data on which such modeling exercises could be explored."
The NRA is "liberal"? Hell, they're always jabbering away on the news, and every time they are on it gets counted as "liberal bias"? Same with the RAND Corporation? The giant defense contractor/think tank? Really?
Sounds like your "study" might have a "stupid bias".
Conservative bias in the media occurs when conservative ideas have undue influence on the coverage or selection of news stories.
Possible causes of conservative bias include:
Media Concentration: A handful of corporate conglomerates (e.g., (Disney, CBS Corporation, News Corporation, TimeWarner, and General Electric) own the majority of mass media outlets in the United States.[Need quotation to verify] Such a uniformity of ownership means that stories which are critical of these corporations are in some cases underplayed in the media.[Need quotation to verify]
Capitalist Model: In the United States the media are operated for profit, and are usually funded by advertising. Stories critical of advertisers or their interests may in some cases be underplayed, while stories favorable to advertisers may be given more coverage.[Need quotation to verify]
Conservative Media Organizations: Certain conservative media outlets such as NewsMax and WorldNetDaily describe themselves as news organizations, but are generally seen as promoting a conservative agenda.
Studies done by FAIR argue that the majority of media citations come from conservative and centrist sources.
Fairness and Accuracy in Reporting (FAIR) has argued that accusations of liberal media bias are part of a conservative strategy, noting an article in the August 20, 1992 Washington Post, in which Republican party chair Rich Bond compared journalists to referees in a sporting match. "If you watch any great coach, what they try to do is 'work the refs.' Maybe the ref will cut you a little slack next time." A 1998 study from FAIR found that journalists are "mostly centrist in their political orientation"; 30% considered themselves to the left on social issues compared to 9% on the right, while 11% considered themselves to the left on economic issues compared to 19% on the right. The report argued that since journalists considered themselves to be centrists, "perhaps this is why an earlier survey found that they tended to vote for Bill Clinton in large numbers." FAIR uses this study to support the claim that media bias is propagated down from the management, and that individual journalists are relatively neutral in their work.
Scholars Noam Chomsky and Edward S. Herman argue that the logic in some of the conservative arguments are flawed. They argue that comparing the media product to the voting record of the journalists is akin to thinking auto-factory workers design the cars they help produce. Indeed, they argue that the media owners and news makers are the ones with an agenda, and they argue that this agenda is subordinated to corporate interests that they view as often leaning right.
A report "Examining the 'Liberal Media' Claim: Journalists' Views on Politics, Economic Policy and Media Coverage" by David Croteau, from 1998, calls into question the assumption that journalists' views are to the left of center in America. The findings were that journalists were "mostly centrist in their political orientation" and more conservative than the general public on economic issues (with a minority being more progressive than the general public on social issues).
Rupert Murdoch, the CEO of News Corporation (the parent of Fox News), self-identifies as a libertarian. Rupert Murdoch has exerted a strong influence over Fox News.
In 2008 George W. Bush's press secretary Scott McClellan published a book in which he confessed to regularly and routinely, but unknowingly, passing on lies to the media, following the instructions of his superiors, lies that the media reported as facts. He characterizes the press as, by and large, honest, and intent on telling the truth, but reports that "the national press corps was probably too deferential to the White House", especially on the subject of the war in Iraq.
E. J. Dionne, Jr., Op Ed columnist for The Washington Post, writes: "For all the talk of a media love affair with Obama, there is a deep and largely unconscious conservative bias in the media's discussion of policy. The range of acceptable opinion runs from the moderate left to the far right and cuts off more vigorous progressive perspectives."
 Cited Allegations
 Fox News
See also: Fox News Channel controversies
According to former Fox News producer Charlie Reina, unlike the AP, CBS, or ABC, Fox News's editorial policy is set from the top down in the form of a daily memo: "frequently, Reina says, it also contains hints, suggestions and directives on how to slant the day's news – invariably, he says, in a way that's consistent with the politics and desires of the Bush administration."  Fox News responded by denouncing Reina as a "disgruntled employee" with "an ax to grind."
According to the December 18, 2010 issue of The Atlantic, "One alleged news network fed its audience a diet of lies, while contributing financially to the party that benefited from those lies. Those who work for Fox News are not working for a journalistic enterprise. They are working for the communications department of a political party." 
 Kenneth Tomlinson and the Corporation for Public Broadcasting
Kenneth Tomlinson, while chairman of the Corporation for Public Broadcasting, commissioned a $10,000 government study into Bill Moyers' PBS program, NOW. The results of the study indicated that there was no particular bias on PBS. Mr. Tomlinson chose to reject the results of the study, subsequently reducing time and funding for NOW with Bill Moyers, which many including Tomlinson regarded as a "left-wing" program, and then expanded a show hosted by Fox News correspondent Tucker Carlson. Some board members stated that his actions were politically motivated. Himself a frequent target of claims of bias (in this case, conservative bias), Tomlinson resigned from the CPB board on November 4, 2005. Regarding the claims of a left-wing bias, Bill Moyers asserted in a Broadcast & Cable interview that "If reporting on what's happening to ordinary people thrown overboard by circumstances beyond their control and betrayed by Washington officials is liberalism, I stand convicted."
Several authors have written books on conservative bias in the media, including:
Eric Alterman wrote What Liberal Media? The Truth About Bias and the News, (2003) in which he disputes the belief in liberal media bias, and suggests that over-correcting for this belief resulted in conservative media bias.
Al Franken wrote Lies and the Lying Liars Who Tell Them, (2003), in which he argues that mainstream media organizations have neither a liberal nor a conservative political bias, but there exists a right-wing media that seeks to promote conservative ideology rather than report the news.
Jim Hightower in There's Nothing in the Middle of the Road but Yellow Stripes and Dead Armadillos (1997; ISBN 0-06-092949-9) uses humor to deflate claims of liberal bias, and gives examples of how media support corporate interests.
David Brock wrote The Republican Noise Machine (2004).
Amy Goodman wrote Standing up to the Madness: Ordinary Heroes in Extraordinary Times.
Edward S. Herman and Noam Chomsky wrote Manufacturing Consent: The Political Economy of the Mass Media (1988, 2002).
Robert W. McChesney and John Nichols (journalist) wrote Our Media, Not Theirs: The Democratic Struggle Against Corporate Media (2002).
Michael Parenti wrote Inventing Reality: the Politics of News Media (1993).
Just a little more to "fair and balance" your little piece of the article