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The former vice president won by nearly 30 points in South Carolina, giving him a big claim to being the principal alternative to Bernie Sanders for the Democratic presidential nomination.
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The Sanders campaign has made its video livestreaming a central part of its overall messaging, fundraising and organizing strategy. Here's a look behind the scenes.
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The former vice president got some promising results in polling leading into the primary this week. But even with a win, he still has lots of catching up to do to hope to win the nomination.
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The Vermont senator won the most votes in Iowa. Now he's won New Hampshire and Nevada outright. That makes him the front-runner for the Democratic nomination.
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It was former New York Mayor Michael Bloomberg's first debate after spending more than $300 million on ads. He had an uneven performance, especially when it came to his record on women.
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The former Senate majority leader said Nevada's diverse population is more reflective of the Democratic electorate and that his state has "a tremendously good case" after Iowa's troubles.
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The survey by NPR/PBS NewsHour/Marist gives the former New York mayor enough polls showing him over 10% nationally to be on stage for the next Democratic debate Wednesday in Nevada.
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Secrecy was the strategy for Iowa Democrats when it came to planning the caucus process. Experts say now that decision compounded an environment ripe for manipulation.
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Price oversaw a caucus process so riddled with issues that it could threaten the state's first-in-the-nation status in future primaries.
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Sen. Bernie Sanders won narrowly, but can he expand his base? Pete Buttigieg again did well, but in another largely white state. And the story of the night was Sen. Amy Klobuchar's third-place finish.
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Sen. Bernie Sanders of Vermont is the favorite, as progressives seem to be coalescing around him and moderates are split among several candidates.
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Vermont Sen. Bernie Sanders is the favorite heading into the caucuses, but polls have shown a tightly jumbled race at the top. Here are key questions and answers about Monday night.