Clockwise from top left: Hillary Clinton, Donald Trump, John Kasich, Ted Cruz and Bernie Sander Justin Sullivan; Andrew Harrer; Ralph Freso; Bob Levey; Brendan Smialowski/Getty Images hide caption

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Listen: Hillary Responds To Critics Allegations

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Opening The Books On Donald Trump's Business Deals In Atlantic City

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Democratic presidential candidate Hillary Clinton speaks at a Las Vegas high school last Friday. Justin Sullivan/Getty Images hide caption

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Hillary Clinton Hitches Her Health Care Wagon To Obamacare

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Donald Trump and Russian President Vladimir Putin have exchanged compliments. In the words of one Putin adviser, "he more carefully listens to so-called 'silent majority' of the American nation, who don't want conflict with Russia." Robert F. Bukaty/AP hide caption

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Who Is Moscow's Favorite Among The U.S. Presidential Candidates?

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Former first lady Barbara Bush, mother of Republican presidential candidate Jeb Bush, campaigns with her son at a town hall meeting at West Running Brook Middle School in Derry, N.H. Jacquelyn Martin/AP hide caption

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Theodore Roosevelt is one of the earliest presidents associated with "progressive" politics, even accepting the nomination of the Progressive Party in 1912. Topical Press Agency/Getty Images hide caption

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Embedded In Des Moines: A 'Times' Reporter's Year Covering The '16 Campaign

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Republican presidential candidates (from left) Carly Fiorina, Chris Christie, Ted Cruz, Jeb Bush and Donald Trump interact onstage at the end of the Republican Presidential Debate on Dec. 15. Robyn Beck/AFP/Getty Images hide caption

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It's An Election Year, So Get Excited! At Least I Will

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Ohio Governor John Kasich speaking at the National Press Club Tuesday. Brendan Smialowski/AFP/Getty Images hide caption

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Kasich: 'Reasonable' To 'Pause' Resettlement Of Syrian Refugees

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Presidential candidate Sen. Ted Cruz (R-TX) speaks during the CNBC Republican Presidential Debate at University of Colorado's Coors Events Center on Oct. 28, 2015 in Boulder, Colorado. Justin Sullivan/Getty Images hide caption

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