Jon Stewart is hoping to accomplish what Rupert Murdoch couldn't do in the media mogul's failed bid to buy CNN.

The Comedy Central "Daily Show" host is urging viewers to go to and make a donation toward the goal of owning the cable news network. Stewart's campaign follows news that Murdoch, the CEO of News Corp., which already owns the Fox News Channel among other media outlets, may increase his offer to buy Time Warner, the company that owns CNN.

Time Warner recently rejected Murdoch's $80-billion offer.

(Photo: Theo Wargo / 2014 Getty Images)