 CBS News Brief. Last night's CNN presidential debate has met the expectations for fireworks. CBS's Jared Hill. The candidates lobbed personal attacks at each other repeatedly. The only person in this stage is a convicted felon. It's the man I'm looking at right now. He could be a convicted felon as soon as he gets out of office. The next presidential debate, September 10th. But many Democrats say Joe Biden underperformed. University of Virginia politics professor Larry Sabato agrees. I wish he had done better. I think it would have been better for the country had he done better.