Tamara Keith

The Democratic presidential candidates will be on stage Tuesday night in Las Vegas for their first official debate of the 2016 campaign.

Both candidates have said they are running positive campaigns, but that could change in this week's debate. In the past, they have shown a willingness to turn tough on their opponents.

Vice President Joe Biden isn't running for president — not yet, anyway. But a group hoping he does is going on air with a six-figure ad buy encouraging him to get in the race.

Unless something dramatic changes, Biden will not be on the stage Tuesday during the first Democratic ...

Democratic presidential candidates Hillary Clinton and Martin O'Malley are out with new plans on gun control, while Bernie Sanders talks about the need for "sensible gun-control legislation."

This post was updated at 4:45 p.m.

Hillary Clinton unveiled her gun-control proposals on Monday in New Hampshire, calling for what she sees as "common-sense approaches" to minimize gun violence less than a week after the latest mass shooting.

After nine people were killed at an Oregon community college ...

The official reporting deadline isn't until Oct. 15, but Democrats Hillary Clinton and Bernie Sanders are already out with big numbers for the third quarter.

And those numbers tell us something about the state of the presidential race on the Democratic side.

Sanders' insurgent campaign raised $26 million in the ...

Commentator Frank Deford said Wednesday there's no women's soccer league to build on the momentum from the World Cup. That was incorrect. The National Women's Soccer League has teams in nine cities.

Kevin McCarthy, R-Calif., is running to be the next speaker of the House, and most observers think he has it locked up. But Tuesday night he said something on Fox News that is causing Democrats to celebrate and conservatives to experience heartburn.

In an interview with Sean Hannity, ...

Republican presidential candidate Donald Trump unveils a tax plan that would drop the maximum rate from nearly 40 percent to 25 percent. Businesses would also get much lower rates.

Mark this time in the history books: 1:09 p.m. That's the moment on Friday when Pope Francis' influence came through in two simultaneous news conferences, held by two men who haven't always seen eye to eye.

At one end of Pennsylvania Avenue, House Speaker John Boehner was reflecting on his ...

The stagecraft — crowds, balloons, marching bands — of a presidential campaign is just a bit harder to muster when you're at 1 percent in the polls.

Congress members are also more religiously affiliated overall. "Maybe it's because we need the solid grounding and good guidance we get from above," one senator says.

Democratic presidential candidate Hillary Clinton has come out against the controversial Keystone XL oil pipeline. It's something she has spent months avoiding taking a position on — and her announcement coincided with the mass media event of Pope Francis' landing at Andrews Air Force Base.

"I think it is imperative ...

"I think [Bernie Sanders] has a lot of good ideas," said one New Hampshire college student. "But at the same time I feel kind of guilty for not supporting Hillary because she is a woman."

Political conventions are, at least in theory, supposed to be about party unity. But on Saturday at New Hampshire's annual Democratic Party convention, a disagreement among Democrats over presidential debates broke out on the convention floor.

Democratic National Committee Chairwoman Debbie Wasserman Schultz came to New Hampshire to rally the ...

This post was updated at 8:30 a.m. ET to include debate metrics from Twitter

Like no doubt millions of Americans, Bernie Sanders tuned in to the Republican debate on CNN. But the Vermont independent who is running for the Democratic nomination for president didn't stop there.

The septuagenarian senator live ...

Hoping to find common ground with students at Liberty College in Lynchburg, Va., Democratic presidential candidate Sen. Bernie Sanders framed social and economic justice as a matter of morality.

Sen. Bernie Sanders has a substantial following among young liberals. He brought his message of economic populism and Democratic socialism to conservative Liberty University Monday.

The White House and Democratic allies on Capitol Hill appear to have rebuffed Republican attempts to derail the Iran nuclear deal. Now, Republicans are saying to them: you own it.