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Carolyn Kaster, Associated Press
First lady Michelle Obama and Sam Kass assistant chef and Food Initiative Coordinator, taste food during a Let's Move event with members of Bravo's series "Top Chef" Friday, Feb. 10, 2012, at Kleberg Rylie Recreation Center in Dallas, during her three day national tour celebrating the second anniversary of Let's Move. The first lady highlighted healthy low-cost school meals.

DALLAS — In just the past few days, Michelle Obama has danced with cheering school kids, chatted with troops and swapped ideas with busy parents. She's engaged in a friendly cooking competition with stars from Bravo's "Top Chef."

She's on a three-day national tour to promote the second anniversary of her campaign against childhood obesity. The images have been disarming, intriguing and non-political. That's just the type of thing her husband's re-election campaign can't get enough of.

Five years to the day after then-Sen. Barack Obama announced he was running for president, Mrs. Obama's travels offer fresh evidence of how powerful a political asset a first lady can be.

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