Former President Trump's exit from the White House coincided with a slump in ratings for cable news channels and digital news sites, according to a Washington Post analysis. Data from media tracking firm ComScore as well as the Nielsen company indicated drops in traffic across websites for the Post, which lost roughly one-fourth of its monthly web traffic, as well as The New York Times, which lost roughly 17 percent of its traffic over January and February. In the cable news ratings wars, CNN lost nearly 50 percent of its prime-time audience over the first few months of 2021, according...