Pandiaraj

To help redesign “Tucker Carlson Tonight” for the 8 p.m. hour, Fox assigned Ron Mitchell, a former O’Reilly producer recently promoted to Fox’s executive ranks, where he would supervise “story development” across prime time. Fox had always excelled not just at attracting more viewers than its rivals but at getting them to stick around longer, giving an added bump to its Nielsen ratings. To maintain its dominance in the Ailes era, the teams working on Fox’s evening lineup began to make wider use of expensive ratings data known as “minute-by-minutes.”