Most of the undecided voters will not watch the debates. Any opinions they form will be based on whatever the TV talking heads tell them about the debates over the following several days. The MSM knows this.
The MSM will do whatever it takes to spin the debate as a great victory for Our Glorious Leader Obama. You can count on it.
And they will fail as badly as they did with Obama #1 or Biden. Wow, do you think the media is powerful. In 1970, yep. 2012? nope.