Hillary Clinton has made her first joint campaign appearance with one of her most powerful supporters, US First Lady Michelle Obama, at a North Carolina rally to urge young people and women to vote.
Mrs Clinton praised Michelle Obama for standing up for the rights of girls and women worldwide, drawing a sharp contrast with Republican nominee Donald Trump.
"I wish I didn't have to say this. ... But indeed, dignity and respect for women and girls is also on the ballot in this election," Mrs Clinton told a crowd of about 11,000.
"And I want to thank our First Lady for her eloquent, powerful defense of that basic value."
Ms Obama's stinging denunciation of Mr Trump after a leaked 2005 video showed him making lewd remarks about groping women was seen by many as one of the campaign's most striking condemnations of the businessman.
Without naming Mr Trump, Ms Obama took him to task again in North Carolina, asking the crowd which candidate they wanted to represent their daughters from the White House.
She said: "We want a president who takes this job seriously, and has the temperament and maturity to do it well. Someone who is steady. Someone who we can trust with the nuclear codes.
"I would not be here lying to you: I believe with all of my heart that Hillary Clinton will be that president," she said.
The Republican candidate has fallen behind Mrs Clinton in opinion polls ahead of the 8 November election amid a series of accusations from women that he groped them or kissed them without their consent.
Mr Trump has called the allegations "absolutely false."
The latest RealClearPolitics poll average shows Mrs Clinton with a nearly six-point national lead over Mr Trump, fueled by declining support for the former reality TV star among women.
Trump insists he is going to win US election
Meanwhile the Republican candidate has told a rally in the swing-state of Ohio "we are going to win back the White House" and insisted he holds a commanding position.
"If we win on November 8," he said, catching himself "When! Okay, okay. When we win on November 8!
"We don't want to take it for granted, but we are winning in a lot of states," he added.
Accusing the media of being biased in favor of Mrs Clinton, Mr Trump said he is "winning in Florida, he's winning in North Carolina, he's winning in Iowa. He's winning in Ohio."
The controversial mogul has not been ahead in Florida or North Carolina in a month, according to the RealClearPolitics average of polls.