DES MOINES -- Mitt Romney has been relying more and more on teleprompters in recent days as he swoops in and out of the battleground states delivering a scripted closing argument.

Romney’s heavy use of teleprompters symbolizes the evolution of his stump speech. Throughout this campaign, Romney usually spoke extemporaneously and with only a few written notes. For formal policy addresses, he read his prepared remarks from teleprompters. But for his standard rallies, he stitched together his speeches, seemingly off the cuff, from an assortment of well-practiced and familiar riffs. He regularly took jabs at Obama’s eloquence, often noting to loud applause that sterling rhetoric does not make a sterling record.

But with his closing argument speech — which he debuted Friday morning in West Allis, Wis., (using teleprompters) — Romney is reaching for sterling rhetoric of his own. The speech is loftier than those he has given before, as he talks in big, sweeping terms about his promise for American renewal. And he is relying on a written script to deliver the words just right; at five of his seven rallies since the Wisconsin speech, Romney has read from teleprompters.

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