US presidential contender Nikki Haley will face intense scrutiny from donors and voters at the third Republican debate on Wednesday as she attempts to grab the second-place slot in the race from Florida governor Ron DeSantis.
The former US ambassador to the United Nations has received a bump in recent opinion surveys, though she remains in third place nationally, behind Mr DeSantis and former US president Donald Trump, who is by far the frontrunner.
Here are some facts about Ms Haley's life and political career:
Daughter of immigrants
Ms Haley, 51, 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. At the same time, she has drawn criticism for her ambiguous positions on some major policy issues.
She is the daughter of two immigrants from India who ran a clothing store in rural South Carolina, and has spoken occasionally about the discrimination her family faced.
Ms Haley graduated from Clemson University in 1994 with a degree in accounting, and helped expand her parents' clothing business. She took on leadership roles in several business organisations before winning a seat in the South Carolina state legislature in 2004. She is married and has two children.
South Carolina governor
Elected governor of South Carolina in 2010, Ms Haley became the first woman to hold that post in the Deep South state and the second person of Indian descent to serve as a state governor in the United States. She received national attention in 2015 when she signed a bill into law removing the Confederate battle flag from the grounds of the South Carolina state capitol following the murder of nine black churchgoers by white supremacist Dylann Roof.
But she later received criticism from some elected officials for describing the flag as a symbol of "heritage" for some Southerners.
Ms Haley also appointed a current rival in the Republican presidential nominating contest, Tim Scott, to the US Senate in 2012.
United Nations ambassador
Ms Haley endorsed several rivals to Mr Trump in the 2016 Republican presidential nominating contest, and occasionally tangled with him during the primaries. But she then went on to serve as his ambassador to the United Nations. During that time, the US pulled out of the Iran nuclear deal, which was unpopular with Republicans.
2024 Presidential campaign
Ms Haley was among the first candidates to enter the race, throwing her hat into the ring in February.
While she enjoyed a brief bump in opinion polls, she subsequently languished in the mid-lower single digits in most national and state-level surveys, until the first debate gave her a measurable boost starting in late August. She still has just a fraction of the support of Mr Trump.
But multiple polls show her in second place in the key Republican nominating states of New Hampshire and South Carolina, and she is narrowing the gap with Mr DeSantis in Iowa. She has tried to distinguish herself as the most capable contender on foreign policy. While almost all have staked out a tough position on China, Ms Haley's unabashed support for Ukraine represents a contrast with Mr Trump and Mr DeSantis, who both say the conflict is not central to US national security.
She will be hoping the debate on Wednesday further raises her profile.
Relationship with Trump
Since leaving the Trump administration in 2018, Haley has had an up-and-down relationship with the former president.
She criticised Mr Trump after his supporters attacked the US Capitol on Januart 6th, 2021, in an attempt to overturn his 2020 election loss to Democrat Joe Biden, but later said Mr Trump has an important role to play in the Republican Party.
Ms Haley later criticised Mr Trump after his indictment in June for mishandling sensitive national security information, saying that if the information laid out in the indictment is true, it is "incredibly dangerous to our national security".
On the campaign trail, she frequently accuses the former president of being too soft on America's adversaries, including China, North Korea and Russia.
