This was posted at www.thefutoncritic.com Friday, December 12, 2003 - 8:08 AM HBO Keeps 'Carnivale' Open for Second Season By Brian Ford Sullivan CHICAGO (thefutoncritic.com) -- HBO is keeping its circus tent open as the pay channel has renewed its freshman drama "Carnivale" for a second season of 13 episodes. Production is slated to begin in the spring for a late 2004 premiere date. "Carnivale" opened to 5.3 million viewers in September but tumbled to 3.5 million viewers for its finale last month. HBO however has a history of sticking by some of its lower-rated series including "The Wire" and "Oz" in recent years. Executive producers Daniel Knauf and Howard Klein will remain with the show for its second go around however Ronald D. Moore is not expected to return. The network also kept mum about which cast members will return for the new season as its recent finale left the fate of several characters up in the air.