In the United States, Fox, which has a pro-Trump vibe in prime time, usually ranks No. 1 among cable news channels with 25 to 54 year olds, a key demographic for advertisers. But for the past week, with Trump mired in scandal, MSNBC has out-rated Fox News in prime time in the so-called "demo." USSC research associate Dr Nicole Hemmer, who recently wrote a book about conservative media, "Messengers of the Right," is quoted in this report by CNN.