Following May's 20-year low in monthly primetime ratings, CNN's primetime ratings for the second quarter were the lowest since 1991. CNN averaged 446,000 viewers in prime time, down 35% from the same period last year. This left CNN a distant third in primetime ratings. Ratings were down for all cable news channels, although the declines for Fox News and MSNBC were in the 13-14% range. Fox continues to dominate cable news viewing, averaging 1.79 million viewers in prime time, and the O'Reilly Factor and Hannity remain the top two cable news programs.
Source - CNN Sinks To 21-Year Primetime Ratings Low in Second Quarter, Deadline Hollywood