If you still need more evidence that CNN has a problem at 8 p.m., here it is. For the month of April, MSNBC's Countdown with Keith Olbermann was the #2 cable news program for the hour in the 25-54 demographic. Paula Zahn has lost 41 percent of her demo viewers compared to a year ago, while Olbermann is up 37 percent. Here are the numbers:

25-54 demo: O'Reilly: 412,000 (-12%) Olbermann: 169,000 (+37%) Grace: 160,000 (+18%) Zahn: 148,000 (-41%)

Total viewers: O'Reilly: 2,102,000 (-4%) Zahn: 605,000 (-20%) Grace: 580,000 (+29%) Olbermann: 452,000 (+28%)