To be fair to Fox News I don't recall anyone in the RNC resigning because they gave candidates debate questions they were privy to as corespondents. (Donna Brazile)
Lest ye be Roy Moore’d (or Anthony Weinered), it is a mistake to take a bad actor and extrapolate isolated statements or conduct to the greater organization without evidence of a trend.
However, CNN is the topic. Don’t think for a minute if Trump or another Republican achieves greater than 50% popularity, CNN won’t swing that way. Negative coverage of Trump was en vogue before CNN started doing it, not the other way around.