Rmoney recently did five mock debates in a 48-hour time span
(My feeling is he may become more programmed with canned responses and lack of spontaneity than usual):
For the second time this week, the Romney campaign is leaking its plans to re-release their candidate, but this time, instead of using Romney to fire up his political base (as they said they would at the beginning of the week), they are now planning to use him as their ambassador to undecided voters.
The plan, described by top aides and advisers in interviews this week, is an acknowledgment that Romney is in enough of a hole that he cannot depend on the presidential debates to turn his candidacy around. In fact, Romney, who recently did five mock debates in a 48-hour period to practice, has confided to advisers that it may be hard to win a debate because every attack against President Barack Obama will seem stale while the attacks on him will seem fresher and newsier to a hostile media.
http://www.dailykos.com/story/2012/09/20/1134281/-Romney-campaign-leaks-yet-another-plan-to-re-release-Mr-47