Obama lost the first debate on style---low energy, low engagement, and not parrying Romney's staccato speech and rote memorization of soliloquy and facts. I think Obama's deficiencies in style are the easiest things to correct in tomorrow's debate. What seems more important are the structure and forethought in specific attacks on Romney and how not to have internally competing strategies.
There is always the possibility that Romney would shape-shift again and perhaps introduce something completely from left field---how about, for example, a program to refinance student loans, or a new kind of health care guarantee? Or attempt to shift the debate to the Benghazi tragedy. I hope that the Obama team has already gamed some of these possible outliers. But my guess is that Romney will double down on his attacks on Obama's record, try to exploit his newfound Daddy-will take-care-of-business role, and further muddle the arguments on tax reform, Medicare and "Obamacare."