"Primetime is not good news for CNN lately," writes Dominick Patten at Deadline.com. "Amidst having its least watched month in primetime in two decades in May and the lowest-rated month in total viewers in 10 years in April, CNN has now hit a 20-year all-time primetime weekly low. The latest fall came during the week of July 30 to August 5, 2012."
The story adds, "The decline was among total viewers and the key 25-54 demo. During the week of July 30 to August 5, ‘Piers Morgan Tonight’ at 9 PM averaged 314,000 viewers overall, with a mere 81,000 in the 25-54 demo, according to Nielsen. That average is the lowest week Morgan has had since he took over Larry King’s spot on January 17, 2011."
The story adds that both Morgan and Anderson Cooper were hosting their respective prime-time shows on CNN the week of July 30.
The article also notes that "Cooper’s ‘Anderson Cooper 360’ 10 PM repeat had 97,000 viewers in the 25-54 demo, the sixth-lowest the network has had in two decades, but a slight 259,000 average total viewers for the week. That average total viewership was the lowest 10 PM weekday hour CNN has had in 20 years."