Say what you will about Donald Trump and whether or not he is good for the country or his party. He's definitely good for the television biz. The ad rates for this week's debates are a little higher than normal. Normally, an all-news station would get in the neighborhood of $5000 for a 30-second spot.
For this week's debate, CNN is charging between $150,000 to $200,000 for 30 seconds.
You'd like to think that sort of thing wouldn't affect their coverage, but...30 times more money (minimum) for every thirty seconds is hard to ignore.