NEW YORK (AP) - How's this for a feud that straddles the line between politics and entertainment: CNN's bow-tied conservative Tucker Carlson vs. "The Daily Show" host Jon Stewart. Carlson on Monday fanned embers still hot from their "Crossfire" confrontation, saying Stewart looked ridiculous during his CNN appearance and was a sellout for publicly backing Democrat John Kerry for president. Stewart, appearing on the debate show Friday, angered Carlson by saying "Crossfire" is "partisan hackery" that does little to advance the cause of democracy. And that was the mild stuff. "You have a responsibility to the public discourse, and you...