View Post CNN | Ratings April 2021 Ratings: CNN Sheds Chunk of Prime Time Audience, But Chauvin Murder Trial Coverage Attracts Total Day Demo By A.J. Katz on Apr. 27, 2021 - 2:55 PM CNN was the No. 1 cable network in April during the 9 a.m.-4 p.m. daypart among adults 25-54. Wall-to-wall coverage of the Derek Chauvin murder trial was the primary reason as to why.