Sarah McCammon

Ahead of the biggest voting day of the 2016 primary season, Donald Trump's rivals are desperately trying to thwart him from steadying his path to the nomination.

As he campaigns through Southern states in advance of Super Tuesday, Donald Trump has downplayed the endorsement of former KKK leader David Duke.

In an interview Sunday, Donald Trump would not disavow support from former Ku Klux Klan leader David Duke. NPR's Sarah McCammon and Tamara Keith have the latest from the campaigns.

The Texas primary offers Super Tuesday's biggest prize: 155 delegates, split proportionally. It's Ted Cruz's home state, a place he should win big. But he's up against the juggernaut of Donald Trump.

It wouldn't be South Carolina without stuff like this.

A superPAC supporting Ted Cruz is hitting Donald Trump in South Carolina radio ads and robo calls for his support of the removal of the Confederate battle flag from the State Capitol grounds. Another robo call out Friday night is also ...

Donald Trump supporters say that his message is actually uplifting, despite the popular view that he is simply riding a wave of anger. While Ted Cruz's message has fewer threads of hope.

Campaigning in South Carolina, Donald Trump denounced Pope Francis' comments suggesting that he is not a Christian because of the GOP presidential front-runner's hardline position on immigration.

A campaign ad by Sen. Ted Cruz is using Donald Trump's support of eminent domain – when the government takes private land for public or commercial use – against him.

Donald Trump and Ted Cruz are having a vicious fight leading up to the South Carolina GOP primary on Saturday, and on Tuesday they held back-to-back rallies in the state.

South Carolina has a strong track record for picking the eventual GOP winner. But the state also has a history of dirty politics.

With the Republican race still unsettled after the New Hampshire primary, the battle moves to South Carolina. On Wednesday, N.J. Gov. Chris Christie and Carly Fiorina withdrew from the race.

N.H. voters are known for picking establishment candidates. Results revealed that this time both Democratic and Republican voters preferred outsiders. Winning has been a big theme of Trump's campaign.

In just minutes, final polls close in New Hampshire, and the candidates await results in the state's presidential primary contests.

Several GOP candidates have a lot at stake Tuesday as results come in from New Hampshire. Donald Trump has been riding high in the polls there, while mainstream Republicans are battling to stay alive.

The top two finishers in the Republican caucuses in Iowa — Ted Cruz and Donald Trump — made their closing pitches in New Hampshire, but to a very different electorate.

Donald Trump, the front-runner in New Hampshire, is leaving nothing to chance — engaging in the type of retail politics that voters expect in that state.

Caucus night is over. Sen. Ted Cruz was the winner on the Republican side and Hillary Clinton pulled out victory in a very close race with Sen. Bernie Sanders. New Hampshire holds a primary next week.

Sen. Ted Cruz won the Republican caucuses in Iowa, turning out his base of evangelical supporters and delivering Donald Trump a loss during his first time being judged by voters.

Monday night's caucuses draw big crowds as Hillary Clinton and Bernie Sanders face off for the Democratic nomination and Donald Trump tries to hold off his Republican challengers.

At the Iowa State Fairgrounds in Des Moines Sunday night, Cruz reflected on the campaign. Without mentioning his name, Cruz took a swipe at his biggest Republican rival in Iowa, Donald Trump.