Which Nikki Haley primary voters will break with the Republican Party in the 2024 general election?

Former Georgia Lt. Gov. Geoff Duncan now says that he will not join No Labels' potential third-party "unity" ticket in the 2024 presidential race against Trump and Biden

In the week since Michael Whatley and Lara Trump took control of the Republican National Committee, a new focus on "election integrity" has emerged.

House Speaker Mike Johnson said Thursday that his message to the GOP conference is to "stick together" and "get the job done" to expand the House majority.

The Alabama Senator says criticism of her rebuttal to President Joe Biden’s State of the Union speech has been politically motivated. ABC News’ Rhiannon Ally reports.

In Republican-led states across the U.S., conservative legislators are refusing to reevaluate abortion bans — even as doctors and patients insist the laws’ exceptions are dangerously unclear, resulting in denied treatment to some pregnant women in need

American Samoa held its Republican caucuses on Friday, March 8

Republican National Committee Chairwoman Ronna McDaniel gaveled in its meeting for the final time on Friday in Houston, shortly before she resigned from the role.

Even as the list of Nikki Haley's primary defeats to Trump grew longer before she ultimately suspended her campaign this week, her financial support never dried up

GOP Sen. Katie Britt (R-Ala.) has been tapped to deliver the party's response to President Joe Biden's highly anticipated speech.

With Trump on the verge of clinching the 2024 Republican presidential nomination, Govs. Kim Reynolds and Glenn Youngkin have now issued endorsements

Nikki Haley's presidential campaign revealed divisions in the Republican Party.

Super Tuesday is a significant day in the presidential primary race when 16 states total, plus American Samoa, head to the polls to vote on Biden, Trump, Haley and more

Nikki Haley announced Wednesday she is ending her presidential campaign, saying she has "no regrets."

Extrapolating a Trump defeat in November based on his primary performances so far may not quite be an apples-to-apples comparison.

Mike Johnson said he will bring Gold Star parents who lost their children during the 2021 U.S. withdrawal from Afghanistan as guests at the State of the Union.

Tricia Mclaughlin, Republican strategist joins ABC News to discuss the Super Tuesday results and what could be in store for the GOP.

Reacting to Haley suspending her campaign, Trump took another shot at her and labeled her supporters as "Radical Left Democrats" before inviting them to join him

Senate Minority Whip John Thune on Wednesday endorsed Arizona Republican Kari Lake in her bid for the U.S. Senate.

Senate Republican Leader Mitch McConnell has endorsed Donald Trump in the 2024 presidential race, despite railing against him after Jan. 6.

ABC News’ Political Director Rick Klein breaks down the results.

Nikki Haley has argued her supporters won’t go to Donald Trump if he becomes the GOP nominee, following his comments that they would be “barred” from MAGA

In exiting the race Wednesday morning, Haley issued a broad call for Republicans to rediscover what the party has previously stood for.

Haley did not formally endorse former President Donald Trump, who is projected to win 14 out of 15 Super Tuesday primaries, setting up a rematch against President Joe Biden in November.

Former President Donald Trump is projected to win at least 12 of the primaries, nearly locking in the Republican nomination and setting up a rematch with President Joe Biden in November.

Nikki Haley is dropping out of the 2024 presidential race, clearing the way for Trump to win the Republican nomination and likely face Biden

Former U.N. Ambassador Nikki Haley is dropping out of the race for the White House, according to sources.

Super Tuesday exit poll results show weaknesses for Joe Biden and Donald Trump alike among independent voters

South Carolina governor Nikki Haley is projected to win the Vermont Republican primary in an upset over former President Donald Trump.

Former President Donald Trump will win the Republican primaries in Texas and Arkansas, ABC News projects, based on analysis of the exit poll.

ABC News' Rachel Scott reports from Mar-a-Lago, Florida, as former President Donald Trump's supporters watch Super Tuesday results come in.

Former President Donald Trump is projected to win the Republican primary in Maine. ABC News' Aaron Katersky reports.

ABC News projects that Trump will win the Virginia Republican primary based on analysis of the exit poll and vote in so far.

Republican National Committee spokesperson Madison Gesiotto Gilbert joined "The Big Story" to discuss the GOP's plans to support its nominee and take on President Joe Biden in November.

A split among Republican lawmakers has doomed proposals from election conspiracy promoters to upend how Kansas conducts elections

Officials see Super Tuesday and his State of the Union address as a focal point.

Sen. John Barrasso announced that he’s seeking the No. 2 Senate leadership position, not party leader.

Trump is projected to win the Iowa caucus over DeSantis, Haley and others

ABC News political director Rick Klein has a look at where former South Carolina Gov. Nikki Haley could potentially put a dent in former President Donald Trump's lead.

Sen. John Thune formalized his bid to replace Minority Leader Mitch McConnell as the next Senate Republican Leader in an interview Monday.

Former President Donald Trump won dozens of delegates over the weekend, but the biggest test in this campaign will come on Super Tuesday when 15 states head to the polls.

Haley says she will stay in race "as long as we're competitive."

Nikki Haley's dream scenario played out as a nightmare in South Carolina's primary on Saturday -- for her and those who wanted her to win over Trump

Two of Trump's top aides say he's already well on his way to securing the 2024 Republican presidential nomination over Haley at least by March 19

Former President Donald Trump romped in South Carolina's GOP primary Saturday, handing Nikki Haley, the state's former governor, a particularly painful loss.

Trump responded to Haley’s win in Washington, D.C., by calling her “queen of the swamp." Meanwhile, a nationwide poll explains why Trump is leading Biden. ABC News’ Andrew Dymburt reports.

Former President Trump leads in all 15 states where delegates are up for grabs, but former South Carolina Gov. Nikki Haley is still hitting the campaign trail.

ABC News’ Jonathan Karl interviews Sen. Mike Rounds, R-S.D., on “This Week.”

Nikki Haley hedged on Sunday on whether she'll make good on her loyalty pledge to support the Republican presidential nominee if she loses the GOP primary to Trump

Former President Donald Trump and Nikki Haley are making a final push ahead of a major faceoff in Super Tuesday Republican primaries.