“Welcome to this struggle,” Andrew Napolitano said triumphantly as he wrapped up the first television episode last weekend of his libertarian talk show, “Freedom Watch.” He saluted the camera and concluded, “From New York, defending freedom, so long America.”

He will be back next week, a commercial said, with a special guest, Glenn Beck.

Mr. Napolitano’s struggle is for smaller government and individual liberty. “The American public needs to know and understand, the government serves you better when it serves you less. That’s the argument,” he said on the show.

“Freedom Watch” is arguably Tea Party TV in its purest form to date.

It is the latest product of the News Corporation, led by Rupert Murdoch, and being shown on the weekends on the Fox Business Network, which is searching for higher ratings by adding provocative commentators.

Fox News already dominates the market for conservative TV talk with hosts like Mr. Beck and Sean Hannity, and has generated billions in revenue to show for it. Now, the upstart Fox Business is making room for libertarian talk, too. An aggressive pro-civil liberties, anti-government streak is evident on both “Freedom Watch” and “Stossel,” a weekly Fox Business show hosted by the former ABC News anchor John Stossel that was added last fall.