New York ? Campbell Brown said Tuesday that she’s quitting her prime-time show on CNN primarily for one reason: Not enough people are watching her.

CNN has struggled in the prime-time ratings as cable news viewers have increasingly sought edgier, more opinionated programming. Brown, a former NBC News reporter, advertised a “no bias, no bull” persona in a straight news and analysis program with a concentration on politics.

Brown said it was her decision to leave.