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Vermont Sen. Bernie Sanders won Tuesday's Democratic Party debate, most polls showed, with Hillary Clinton garnering support as well. Lower-polling pols didn't fare well.

Even when O'Malley slighted Clinton, he took a cordial approach.

Toward the end of the Democratic debate Tuesday night, Bernie Sanders and Hillary Clinton both called for fewer prison sentences for people who smoke marijuana.

"The economy does better when you have a Democrat in the White House," the former secretary of state said.

Hillary Clinton gained an unlikely ally in Bernie Sanders on Tuesday night in her bid to steer the national conversation away from her private-server controversy.

Vermont Sen. Bernie Sanders came out swinging when asked about income inequality during Tuesday's Democratic debate in Las Vegas.

During Tuesday's Democratic presidential debate, candidates offered ideas for addressing racism, including criminal justice policies that target black men.

During Tuesday's debate, Hillary Clinton said her recent rejection of the Trans-Pacific Partnership wasn't a flip-flop.

The network offered the mobile platform for free, to introduce the service, but the app faced complications as Democrats tangled Tuesday evening.

Here are some of the best reactions from Twitter as the Democratic candidates debated in Las Vegas.

The Republican presidential candidate was sharing his thoughts on Tuesday's event in Las Vegas, despite saying it would be "very boring."

On issues from guns to energy to immigration, the Democratic presidential candidate's views can at times be contradictory.

The Democrat, a former U.S. senator from Virginia, is polling at only 2 percent. But he has a long background of public service.

Feeling the Bern? Not quite sure? Here are seven quotes to help you decide.

In recent months, Americans have increasingly searched for answers about Hillary Clinton on the Web, including for her height and age.

Lincoln Chafee has said he will address corporate tax evasion, end U.S. drone strikes and tackle climate change. He supports raising the minimum wage and a guest-worker program with a path toward citizenship for immigrants illegally in the country.

“They support amnesty. They support releasing criminal illegal aliens.”

President Barack Obama crashed a California wedding, took some photos and still finished the 18th hole.

As one of the fastest growing eligible voter populations in the country, Hispanic voters are sought after by Democrats.

Hours before the first Democratic debate, Sen. Bernie Sanders picked up a healthcare union's endorsement.

A recording of Nusra Front leader Abu Mohammed al-Jolani calls for the death of Russian people and soldiers in Syria.

The former Florida governor and Republican presidential candidate wants to roll back Obamacare and give more power to the states.

A list of Democratic debate watch parties in Washington, D.C.

Vermont Sen. Bernie Sanders needs to convince black voters and the entire Democratic Party that he understands their concerns during the debate.

The Democratic presidential candidate's favorability numbers fell Monday to their lowest since 1992, CBS data showed.

The live-stream of the debate will be offered online on CNN.com's homepage, on the CNN Politics' live blog and across mobile platforms, in addition to the television stations CNN, CNN International and CNN en Español.

The rally outside the nonunion hotel was organized by a local chapter of the Culinary Workers Union.

Ready for his close-up? Republican presidential candidate Rand Paul will live-stream his entire day on the campaign's official Facebook page Tuesday.

Saudi officials are warning Russia that continued airstrikes in Syria could destabilize the country further.