Do you suppose this drop in approval is related to mainstream media "coming out" as the propaganda arm of the Democratic Party? I think so. A Breitbart Big Journalism article based on this study indicates that even Democrats have dropped their evaluation of journalists:
The plummeting approval for journalists is bi-partisan; Republicans/leaning Republicans are down eight percent and Democrats/leaning Democrats are down 10 percent.Hat tip to Lucianne.com for the link.