The latest Romney model apparently took a lot of work:
The reinvention effort includes softening the edges of Romney, both stylistically and philosophically. The more likable version of Romney was no accident — he worked hours on his smile, his posture and the delivery of his words. The more centrist version of Romney was no accident either — he carefully calibrated his message on taxes, spending and Medicare to broaden his appeal.
Robert Costa reports on Mitt's debate prep:
During the opening prep sessions, the group [of advisors] quickly came to a consensus: At the podium, Romney would be forceful, nearly as assertive as he was in [Kerry] Healey’s living room. His advisers have always admired Romney’s ability to peel apart arguments in private, and they encouraged him to do the same at the debate, with a little polish. The goal was to overwhelm the president with liveliness and information, to force him to confront the messy details of his economic and fiscal record. The strategy, sources say, clicked with Romney for two reasons: He did not want to spend hours tinkering with his mannerisms, and he wanted to focus on internalizing data. He’d take advice on his voice, his posture, and the rest, but he wanted his prep time to be a policy workshop.