Hillary Clinton made history this year, overcoming personal and political setbacks, to become the first woman to win the presidential nomination of a major U.S. political party. If she wins in November, she will go from first lady to former U.S. Senator from New York and former Secretary of State, to "Madam President.” She is one of the most famous people in the world, yet some who know her personally say she is guarded about revealing too much of her personality in public.
In Pictures: Hillary Clinton Through the Years

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Myanmar's pro-democracy opposition leader Aung San Suu Kyi, right, and U.S. Secretary of State Hillary Rodham Clinton speak to the press after meetings at Suu Kyi's residence in Yangon, Myanmar Friday, Dec. 2, 2011. (AP Photo/Saul Loeb, Pool)

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In this July 14, 2016, file photo, Democratic presidential candidate Hillary Clinton, accompanied by Sen. Tim Kaine, D-Va., speaks at a rally at Northern Virginia Community College in Annandale, Va. Clinton chose Kaine to be her running mate. (AP Photo/An

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Republican presidential nominee Donald Trump speaks to Democratic presidential nominee Hillary Clinton during the second presidential debate at Washington University in St. Louis, Sunday, Oct. 9, 2016. (AP Photo/John Locher)

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Former President Bill Clinton kisses Democratic presidential nominee Hillary Clinton as she and their daughter, Chelsea Clinton, greet supports during the presidential debate at Hofstra University in Hempstead, N.Y., Sept. 26, 2016.