text:  So I think there will be a lot of issue talk and probably lots of misrepresentations. A lot of fact-checking will have to get done tonight on both candidates, frankly. But at the same time, I don't know that's why voters are necessarily tuning in. A lot of times for debates, people come out with more kind of a feeling, a perception about a candidate versus a firm sense of where he or she stands. On the performance side, what do the campaigns not want to see their candidates do tonight? What are they telling them no-go zone?