The Retooled, Loose Romney, Guessing Voters’ Age and Ethnicity

 But perhaps the trickiest part of this reinvention is changing who Mr. Romney is when he steps out from behind the lectern and wades into a roomful of voters: a cautious chief executive who is uneasy with off-the-cuff remarks, unnatural at chitchat and spare with his emotions.

They could have pretty much ended the sentence at "...changing who Mr. Romney is."