Normally, when you are going into a debate with your opponent, you want to lower the expectations for yourself.
That way, if you suck, people go "well, that's OK." However, if you raise them, then you have to live up to them.
Mitt Romney didn't get the message:
Actually, I have seen a couple of debates from when she was running for Governor, and she was good.
It will be interesting to watch tonight.