According to the May Nielson ratings, The Daily Show with Jon Stewart beat the entire Fox News network in terms of total viewers. Stewart averaged 2.3 million viewers, while the Fox News prime time and day time line up averaged 1.85 million viewers.
According to Comedy Central, The Daily Show is dominant in its time slot,
For the month of May 2011, “The Daily Show” averaged 2.3 million total viewers and a 1.2 P18-49 rating. Versus May 2010, “The Daily Show” grew an astounding +19% in total viewers, with incredible double-digit ratings growth across all key demos including P18-49 (up +21%), P18-34 (+22%), P18-24 (+21%), M18-34 (+18%) and M18-24 (+21%).
“The Daily Show’s” 1.344 million P18-49 viewers led all late night talk shows in the demo for the month and, with a 2011 YTD average of 1.25 million P18-49 viewers, “The Daily Show” trails only “The Tonight Show with Jay Leno” (1.27 million P18-49 viewers) in the benchmark demographic for the calendar year crown.
While Stewart is on the rise, Fox News had a really, really bad May. Total viewership was down 10%, and Fox News lost viewers in the 25-54 demo in every prime time show. Bill O’Reilly was down 9%, Sean Hannity was down 6%, and Greta Van Susteren dropped 12%.
http://www.politicususa.com/en/jon-stewart-fox-ratings