Bill Maher wants U.S. Senate hopeful Christine O’Donnell to appear on his current HBO show, "Real Time with Bill Maher," and is threatening to release more television clips of her from his old show, "Politcally Incorrect," until she comes back on, reports Politico.com.

It was on his old program, "Politically Incorrect" that O’Donnell made her confession to having dabbled in witchcraft, the story says. "Suddenly, Maher found himself sitting atop one of the most potent collections of TV clips of the election season," Politico writes.

Maher tells the site that she appealed to him because "she made good TV," adding that she was a "religious nut." Maher has a particular interest in religion, having made the 2008 documentary "Religulous."

On his HBO program, "Real Time," Maher extended an invitation for her to return. "“I’m just saying, Christine, it’s like a hostage crisis. Every week you don’t show up, I’m going to throw another body out," he said, referring to more clips of previous appearances O’Donnell made on Maher’s old show "Politically Incorrect."