Politico's Michael Calderone reports:

Nobody's covering the tea parties quite like Fox - and that's prompting critics and cable news competitors to say that the network is blurring the line between journalism and advocacy.

“Fox appears to be promoting these events at the same time it is presenting them in a way that looks like reporting,” said Stephen Burgard, director of Northeastern University's School of Journalism.

Burgard called the practice “pseudo-journalism,” adding: “We have seen this before from Fox News Channel, but its role as galvanizer of opposition to President Obama's policies and leadership posture appears to be emerging.”

A Fox spokesperson said the network did not have an executive available to speak about its tea party coverage. A second Fox representative declined repeated offers to address the charge that it was blurring the lines between journalism and advocacy.

While tea party organizers say their movement is nonpartisan, the protests lean hard to the right: Newt Gingrich and Michelle Malkin are on board, as is Freedom Works, an organization run by former Republican Majority Leader Dick Armey. And more than a dozen prominent Republicans were set to participate in tea party protests Wednesday, including South Carolina Gov. Mark Sanford, House Minority Leader John A. Boehner (R-Ohio) and a slew of other Republicans from Congress.