maybe you could just demand full disclosure. Any blogger that was paid by any political organization (campaign, 527, or any other advocacy group registered as such in the tax code) must have that affiliation displayed prominently on the front page for 2 years, and then kept in an archive linked from the front page ad infinitum.

Journalists wouldn't be intimidated by a blogger, who they knew was a campaign surrogate. It doesn't hurt the blogger at all, if they engage in real blogging. It would even give the blog legitimacy with readers.