Fun fact: Prior to Trump running for President in 2015, CNN's ratings were so low on the Nielsen cable ratings, that CNN was falling of the top 20 cable channels and risking not counting with the popular TV show categories, like top show of "primetime", "late night", etc.
A HUUUGE part of CNN's obsession with Trump is that while Trump was President, CNN's rating increased 40% and stayed at that level for Trump's whole tenure and their ratings plummeted after Trump left office.