Parker Spitzer could soon be just ... Spitzer. Kathleen Parker is so unhappy with her role on the new CNN show that she's threatening to walk, sources tell the New York Post. The conservative columnist thinks she's playing second fiddle to co-host Eliot Spitzer, and she actually did walk off the set a few weeks ago. Some sources agree Spitzer is upstaging her, but others claim Parker's own "weaknesses" as a TV personality are to blame. Of course, this could all turn out to be a moot point: The show has been struggling quite a bit with ratings.