FACTBOX-The Republican challenging Trump for the US presidential nomination

Just one Republican candidate remains to challenge former President Donald Trump for the party's nomination in the November 2024 U.S. presidential contest to take on President Joe Biden, a Democrat who is seeking reelection. Here are the Republican Party's two candidates: DONALD TRUMP Trump has embraced his indictments in four separate criminal cases - unprecedented for a former American president - and leveraged them to boost his popularity among Republicans and raise funds, helping to make him the Republican frontrunner with 64% in the latest Reuters/Ipsos polling and victories in the first two nominating contests in Iowa and New Hampshire.

Just one Republican candidate remains to challenge former President Donald Trump for the party's nomination in the November 2024 U.S. presidential contest to take on President Joe Biden, a Democrat who is seeking reelection.

Here are the Republican Party's two candidates: DONALD TRUMP Trump has embraced his indictments in four separate criminal cases - unprecedented for a former American president - and leveraged them to boost his popularity among Republicans and raise funds, helping to make him the Republican frontrunner with 64% in the latest Reuters/Ipsos polling and victories in the first two nominating contests in Iowa and New Hampshire. Trump, 77, has called the indictments a political witch hunt to thwart his pursuit of a second four-year term, an assertion that the Justice Department has denied. If elected again, Trump has vowed revenge against his perceived enemies and has adopted increasingly authoritarian language, including saying he would not be a dictator except "on day one." He has promised other sweeping changes, including gutting the federal civil service to install loyalists and imposing tougher immigration policies such as mass deportations and ending birthright citizenship. He has also promised to eliminate Obamacare health insurance and impose harsher curbs on trade with China.

NIKKI HALEY A former South Carolina governor and Trump's ambassador to the United Nations, Haley, 52, has emphasized her relative youth compared to Biden, 81, and Trump, as well as her background as the daughter of Indian immigrants. She has gained a reputation in the Republican Party as a solid conservative who has the ability to address issues of gender and race in a more credible fashion than many of her peers. She has also pitched herself as a stalwart defender of American interests abroad and has argued Trump's management style is too chaotic and divisive to be effective. Haley, who drew 19% support among Republicans in the Reuters/Ipsos survey, has sharpened her attacks on Trump following New Hampshire's contest and raised $1 million after Trump threatened her donors. She has suggested she will stay in the race past the Feb. 24 primary in her home state. (Compiled by the Washington newsroom; editing by Susan Heavey and Jonathan Oatis)