"A journalist makes himself the hero of the story. A reporter is only a witness."
--Jim Cleary (Deadline U.S.A.)
Why don't contributors to political media regularly reveal their political party, voting affiliations, campaign contributions, etc up front when presenting a story? An article would certainly be more accurately interpreted--particularly to 'low information' consumers--as consumers would be alert to misleading statements, incomplete analysis, and potential biases showing thru from the writer.
Particularly with 'journalists' that claim to be objective, then they should have not problem revealing their political leanings up front. Honest and open.
Full disclosure is not something most journalists would look forward to.