The 2010 TIME 100 Poll

Cast your votes for the leaders, artists, innovators and icons who you think are the most influential people in the world. Though official voting for inclusion on the TIME 100 list has now closed, with Mir-Hossein Mousavi having won the honor, users can continue to vote for their favorites until the list is revealed on Thursday, April 29th

Michelle Obama

Michelle Obama

YURI GRIPAS / Reuters / Corbis

Age: 46
Occupation: First Lady of the United States
Previous TIME 100 Appearances: 1

As First Lady, the Ivy League–educated Obama has one of the biggest bully pulpits in the country, and she's chosen to use it to combat childhood obesity. Her Let's Move campaign works to promote exercise for sedentary kids, and she has courted controversy by calling on food manufacturers to provide healthier options at the grocery store.

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