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CEDAR FALLS, Iowa — Feeling optimistic, Republican presidential candidate Mitt Romney aired a new, positive TV ad in Iowa and spent Thursday touring the state and delivering an upbeat message focused on President Barack Obama.

The minute-long ad shows clips from Romney's campaign announcement speech in June. Romney talks in the spot about the "spirit of enterprise" and focuses on the opportunities America has provided its people.

With just five days until the Jan. 3 Iowa caucuses, Romney made an early-morning stop at a diner here to make the same pitch in person. He ignored his Republican rivals, also campaigning in the state, and focused instead on the Democratic president.

"We have a choice in this coming election of what kind of America we're going to have," Romney told the crowd at J's Homestyle Cooking. "It's not just about replacing a president. It's about saving the soul of America. Are we going to change America into something we don't recognize?"

The former Massachusetts governor had two other events scheduled Thursday, including at Music Man Square in Mason City, the birthplace of playwright Meredith Willson. Willson set his play, "The Music Man," in Mason City.