Mitt Romney’s top strategist, Stuart Stevens, this morning previewed the candidate’s convention speech, scheduled for Thursday night. Briefing reporters aboard Romney’s campaign plane en route to Tampa, Stevens said Romney plans to speak for about 40 minutes and touch on many of the themes he has discussed since launching his campaign in New Hampshire in June 2011.

“It’ll be a clear vision of a Romney presidency and very much from his heart about America and why he wants to be president and what a presidency would be like,” Stevens said. “It’ll be a continuation of the argument, themes that he laid out when he first announced for president. You’ll see a direct correlation between the speech he gave in New Hampshire in that field over a year ago to this speech – very much a through thread.”