Human Interest

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Singer Demi Lovato is among the celebrities hoping to boost Hillary Clinton's presidential campaign in Iowa. (Associated Press)

Former Arkansas Gov. Mike Huckabee and former Sen. Rick Santorum of Pennsylvania were the winners of Iowa's last two GOP caucuses. But so far neither has been able to recapture the magic this time around. (Associated Press)

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Republican presidential candidate former Pennsylvania Sen. Rick Santorum is seen reflected in a mirror as he speaks to voters during a campaign event at the Copper Cup, Wednesday, Jan. 20, 2016, in Cherokee, Iowa. (AP Photo/Mary Altaffer)

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Bridgette Anderson speaks during a news conference in Decatur, Ga., on Jan 7 after the Dekalb County district attorney announced he would seek to indict a police officer who shot and killed her boyfriend, Air Force veteran Anthony Hill. (Associated Press)

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Singer Demi Lovato is among the celebrities hoping to boost Hillary Clinton's presidential campaign in Iowa as the caucuses loom. (Rich Fury/Invision/AP)

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(Dave Kapp)

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Rob Hall (Jason Clarke) leads climbers up "Everest," now available on Blu-ray from Universal Studios Home Entertainment.

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A model wears a creation as part of Rick Owens' men Fall-Winter 2016-2017 fashion collection, presented in Paris, Thursday, Jan. 21, 2016. (AP Photo/Zacharie Scheurer)

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A model wears a creation by British fashion designer Kim Jones for Louis Vuitton men's Fall-Winter 2016/2017 fashion collection presented in Paris, France, Thursday, Jan. 21, 2016. (AP Photo/Francois Mori)

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In this Dec. 6, 2015, file photo, the Miami Dolphins cheerleaders perform during the first half of an NFL football game against the Baltimore Ravens, in Miami Gardens, Fla. (AP Photo/Wilfredo Lee, File)

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U.S Defense Secretary Ashton Carter delivers a speech during a conference in Paris, Thursday, Jan 21, 2016. (AP Photo/Christophe Ena) ** FILE **

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British Prime Minister David Cameron leaves 10 Downing Street in London, to attend Prime Minister's Questions at the Houses of Parliament, Wednesday, Jan. 20, 2016. (AP Photo/Matt Dunham) ** FILE **

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National Edition News cover for January 21, 2016 - Republican presidential candidate, Sen. Ted Cruz, R-Texas, leaves the Senate Gallery after voting, on Capitol Hill in Washington, Wednesday, Jan. 20, 2016. (AP Photo/Molly Riley)

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Despite Republican colleagues in the Senate decrying fellow presidential candidate Donald Trump's unkind debate remarks, Sen. Ted Cruz has yet to get the official backing of any GOP Senators for his 2016 White House bid. (Associated Press)

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Memorial to the 1800 men, women and children buried in the Contrabands & Freedmen's Cemetery, Alexandria photo by Corinna Lothar/Special to The Washington Times

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A "spy dress," with secret messages attached to a hoop beneath, enabled a lady to be a fashionable patriot. (Corinna Lothar/Special to The Washington Times)

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A pro-life demonstrator holds a sign and a flower while cheering during a rally, Tuesday, Jan. 19, 2016, at the Capitol in Olympia, Wash. (AP Photo/Ted S. Warren) ** FILE **

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Republican presidential candidate, Sen. Ted Cruz, R-Texas speaks during a campaign stop at Lino's Restaurant, Tuesday, Jan. 19, 2016, in Sanbornville, N.H. (AP Photo/John Minchillo)