“None” journalists have certain advantages over their “some” colleagues, but the reverse is also true. If you want to appear equally sympathetic to all potential sources, politics: none is the way to go. If you want to avoid pissing off the maximum number of users, politics: none gets it done. (This has commercial implications. They are obvious.) But: if you’re persuaded that transparency is the better route to trust, politics: some is the better choice. And if you want to attract sources who themselves have a political commitment or have come to a conclusion about matters contested within the political community, being open about your politics can be an advantage. That is the lesson that Glenn Greenwald has been teaching the profession of journalism for the last week. Edward Snowden went to him because of his commitments. This has implications for reporters committed to the “no commitments” style.
The key is to not go too far in either direction.
Being detached and objective is fine, but you don’t want to be so removed from the reality of what you’re reporting on that you go into what Paul Krugman calls “shape of planet blogging” – being so committed to reporting both sides of a story that you’re willing to spread points of view that are wrong or outright lies.
On the other end of the spectrum, don’t be Fox News or MSNBC.