An excerpt from her resignation:

To be clear: this is my decision, and one that I have been thinking about for some time. As for why, I could have said, that I am stepping down to spend more time with my children (which I truly want to do). Or that I am leaving to pursue other opportunities (which I also truly want to do). But I have never had much tolerance for others’ spin, so I can’t imagine trying to stomach my own. The simple fact is that not enough people want to watch my program, and I owe it to myself and to CNN to get out of the way so that CNN can try something else.

Full statement here.

Maybe they should try something crazy and put a conservative on the air at 8 p.m., but I assume the move will be something more like Rick Sanchez moving into the time slot.