Haley's victory at least briefly halts Donald Trump's sweep of the GOP voting contests, although the former president is likely to pick up several hundred more delegates this week.

Since 1988 when frontloading a significant number of states on a single day became popularized in the GOP primary, it has been decisive in determining the nominee.

Nikki Haley seemed to side with the Alabama court's decision, telling NBC News, "Embryos, to me, are babies." President Biden has seized the opportunity to call for enshrining Roe.

Just one week after the Iowa caucuses, New Hampshire holds the country's first primary election.

Haley is the only major candidate left facing former President Donald Trump. Even though she has her best polling numbers in N.H., which votes Tuesday, the rest of the calendar is an uphill battle.

The former president has been in the Granite State almost every night this week, touting his 30-point victory in Iowa's caucuses. He's counting on New Hampshire's voters to help him win big.

After a year of campaigning and more than $120 million in ad spending in Iowa, the caucuses have come and gone. Here are key takeaways about Donald Trump, Nikki Haley, Ron DeSantis and GOP politics.

For many Republican Iowa voters, the caucus is the first opportunity to weigh in on who they want to be their nominee for the 2024 presidential race.

The former governor of South Carolina, Haley was born in the southern state. But as she surges in Republican polls, Trump is elevating false conspiracy theories about her citizenship on social media.

Most of Donald Trump's rivals have gone to great pains to avoid directly criticizing the former president out of concern that it would alienate base Republican voters.

Immigration has become one of the cornerstone issues of the 2024 campaign as GOP presidential hopefuls try to stand out as the toughest on both illegal and legal immigration.

As four candidates hotly debated issues ranging from foreign policy to gender identity to immigration, it's clear Nikki Haley is seen as a threat and Trump still looms large even when he's not there.

For the fourth Republican primary debate, the field is smaller than ever, with just four candidates meeting the Republican National Committee criteria to participate.

The former U.S. ambassador to the United Nations tries to balance her identity as the only woman in the race for the GOP nomination with a Republican electorate that eschews identity politics.

Foreign policy doesn't always make headlines in presidential campaigns, but with the U.S. involved in two foreign wars — and facing a rising adversary in China, voters are paying more attention.