In order to find the statistics you want, you may have to think about who would collect them; governmental agencies, advocacy associations, and marketing agencies are among groups to consider. If you can find an article that mentions related statistics, check the author's source.
And That's the Way It Isn't
by
L. Brent Bozell (Editor); Brent H. Baker (Editor); Jeane Kirkpatrick (Preface by)
Reprints, excerpts & summaries of 48 studies documenting the liberal political bias in reporting by major U.S. media outlets. Divided into ten chapters by subject area, with "Key findings" & an "Overview" for each study discussed. Illustrated with over 100 graphs & tables. Foreword by Jeane Kirkpatrick, former U.S. Ambassador to the United Nations. "Settles once & for all the question of media bias in America," said former Reagan speechwriter Mona Charen. "Fresh intelligence on one of the most boring industries in America from some of the liveliest media critics in the Republic. Highly recommended," wrote R. Emmett Tyrrell Jr., Editor of The American Spectator. "And That's the Way It Isn't contains all the facts & figures, means & modes needed by journalism teachers to regain their confidence & roles as media critics vital for the cultural health of America," said H. Joachim Maitre, Dean of the Boston University College of Communication. ABC radio commentator Paul Harvey declared: "It's one heck of a book." Published by the Media Research Center, 113 S. West St., Alexandria, VA. 22314. Call (703) 683-9733 or 800-346-2427.
Best practices for television journalists : a handbook for reporters, producers, videographers, news directors and other broadcast professionals on how to be fair to the public
by
Av Westin
A handbook of best practices for television and broadcast journalists, encouraging practices that the public will see as being fair, thereby helping assure that television news gathering remains free.