HILLARY CLINTON

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."

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

A data guide to the Democratic candidates' poll numbers in the last year and the cash they have raised since entering the 2016 presidential race.

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.

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

"It’s kinda like, I just know that women make rash decisions emotionally -- they make very permanent, cemented decisions -- and then later, it’s kind of like it didn’t happen, or they didn’t mean for it to happen."

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

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.

Compared with their Republican counterparts, Democratic candidates will likely get more time to illustrate points during their first debate.

The super PAC pulled its last ad about Biden's experience with personal tragedy after an aid to the vice president requested it.

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

The first Democratic debate will air Tuesday night, featuring front-runners Hillary Clinton and Bernie Sanders.

Vice President Joe Biden is not expected to participate in the first Democratic debate, but organizers are setting aside a lectern just in case.

Hillary Clinton has been plagued by scandals for decades.

Anderson Cooper is scheduled to moderate the first Democratic debate Tuesday night.