HILLARY CLINTON

The GOP U.S. presidential candidates will have one final opportunity to impress voters ahead of Iowa’s caucuses.

Clinton and Sanders appealed strongly to their core supporters. Did they win over any new voters?

Hillary Clinton cast Sanders’ criticism of her Wall Street ties as an attack on President Obama.

Yes, 29 million people in the U.S. lack health insurance. And it's "more or less true" that Sanders wished someone would challenge Obama in 2011.

The Democratic presidential candidate says there’s no reason Americans should be paying more for healthcare than do people in the rest of the world.

The Democratic candidate says the just-implemented nuclear deal does not allow Iran to test what could be intercontinental missiles.

The fourth Democratic debate is scheduled to start at 9 p.m. EST.

The Democratic race has gotten tighter in recent weeks with Sanders closing the gap.

Democratic presidential debate moderator Lester Holt faces the challenge of drawing in viewers during Sunday prime time.

As the Democratic race tightens, Hillary Clinton and Bernie Sanders are set to face off in South Carolina.

WIth early leads in Iowa and New Hampshire mostly erased, Hillary Clinton wishes she had gone after Bernie Sanders sooner, according to her associates.

Less than half of respondents in a recent poll felt his presence in the race would boost Hillary Clinton's chances of winning.

Texas Sen. Ted Cruz and Donald Trump stood out and traded insults Thursday night, while Chris Christie and Marco Rubio turned in strong debate performances.

Marco Rubio wants to teach voters what a value-added tax is so he can beat Ted Cruz.

Sparring between Texas Sen. Ted Cruz and real estate mogul Donald Trump took center stage Thursday.

Donald Trump has also slammed the Clintons' marriage in recent weeks, calling Bill Clinton "one of the great abusers of the world."

Here are facts about the attack in Benghazi, Libya, on Sept. 11, 2012.

Joel Benenson, a political adviser to Hillary Clinton, is also a PR man for major banks.

“Unlike another woman in this race, I actually like spending time with my husband,” the Republican candidate said Thursday.

At this point during her previous presidential run, the Democrat was doing much better in national polls.

According to a TV advertising research agency, eight of the 12 highest-rated political ads on TV are pro-Sanders.