Hillary Clinton and Donald Trump are to face each other in their first TV debate.
The two presidential candidates will take to the stage in New York on September 26.
The duel at Hofstra University could be the most watched debate in TV history, with 100 million viewers.
There are 43 days until the November election, with polls suggesting Democratic candidate Hillary Clinton has a narrow lead nationally.
Controversy has marked the debate build-up after Donald Trump said he might invite a woman who had an affair with Bill Clinton in the 1970s.
The Republican tweeted on September 24 that he would perhaps ask Gennifer Flowers to sit in the debate audience, in response to Hillary Clinton having invited Trump critic Mark Cuban.
Gennifer Flowers initially said she would attend but Donald Trump’s running mate, Mike Pence, said on September 25 she was not coming and the suggestion was not a serious one.
Photo CBS Newsllary
The debate at 21:00 local time will last 90 minutes and is being moderated by NBC news anchor Lester Holt.
It is the most hotly anticipated event so far in a long election campaign, partly due to the contrasting styles of the two candidates.
Donald Trump marched to a stunning win in the Republican primaries against vastly more experienced political opponents, he hurled personal insults and made suggestive remarks on the debate stage.
Hillary Clinton, with decades of experience in politics, usually relies more on a firm and detailed policy grasp, but has problems portraying authenticity and spontaneity.
Observers predict the audience could be as high as that for the Super Bowl and surpass the 80 million who watched Jimmy Carter and Ronald Reagan debate in 1980.
Three of the topics for the six segments of the debate have already been announced – America’s Direction, Achieving Prosperity and Securing America – but three others, based on events in the news, will be asked during the debate.
In the past week, both Hillary Clinton and Donald Trump have focused on the response to fatal police shootings of African-American men in Tulsa, Oklahoma, and Charlotte, North Carolina, as well as the ensuing protests.
More than twenty years after she became a household name for alleging she had a 12-year affair with Bill Clinton, Gennifer Flowers has made yet more shocking claims about the former president.
Gennifer Flowers, who enjoyed a lucrative modeling and acting career as well as top book sales following her announcement in 1992, has claimed that Bill Clinton called her as recently as 2005, begging to see her.
Speaking with WGNO, Gennifer Flowers, 62, said was at home alone in Louisiana following her divorce when her phone rang.
“I picked up the phone and it was him,” she told host Susan Roesgen.
“And he wanted to come by my house and talk to me. I was taken aback; that was the last thing I expected.”
Gennifer Flowers added that, even when she refused to allow him to visit, he persisted.
“I said, <<No you can’t come over here>>,” she continued.
“He said, <<I’ll put on a hoodie and I’ll jog up there>> and I said, <<No, I want you to leave me alone>>. And that was that.”
The call allegedly came decades after Gennifer Flowers claimed they had a years-long affair while Bill Clinton was governor of Arkansas. He later claimed they only ever had one sexual encounter in the 1970s.
But in another bombshell on WGNO, Gennifer Flowers claimed Bill Clinton had in fact discussed revealing the affair in the 1990s as he was struggling to achieve the recognition he needed to win the presidency.
Gennifer Flowers has claimed that Bill Clinton called her as recently as 2005, begging to see her
“I made him a household name over night,” Gennifer Flowers told WGNO.
“We had had that discussion. He said, <<My problem right now is that no one knows who I am. I need that name recognition>>.
“He went on to talk about the other candidates and the advantages they had… When my story came out, he was a household name.”
The claims come as Gennifer Flowers appeared on the show in the wake of the David Petraeus sex scandal to discuss life as the mistress of a high-profile man.
“It’s very unfortunate,” Gennifer Flowers said of the Petraeus affair.
“It does really surprise me. But there’s always something like that around the corner.”
To Paula Broadwell, the biographer-turned-mistress of David Petraeus, she said: “Call me Paula! I’ll give you some really good advice… You’d better buck up, it’s going to be one hell of a bull ride.”
Of her own claims about her affair with Bill Clinton, Gennifer Flowers added: “I really thought that coming out and telling the truth would set me free, but it didn’t.”
Gennifer Flowers spoke out in January 1992, as Bill Clinton fought for the White House, and claimed she had had a 12-year affair with the married father of one during his time as governor.
She later released tape recordings she claimed she had secretly made of her and Clinton’s phone calls, although there was doubt over their authenticity.
In 1998, Bill Clinton admitted he had a sexual encounter with Gennifer Flowers and added in his 2004 autobiography My Life that it was only on one occasion in 1977, when he was already married.
Following her claims, Gennifer Flowers posed for Penthouse magazine and featured in independent films and television shows. She said her claims netted her $500,000.