How is Ashley Biden related to President Joe Biden?

Before the president took the stage, he was introduced by Ashley Biden, his youngest child. 

Ashley called Biden her "best friend" during an impassioned speech ahead of her father's appearance at the democratic convention. 

“Dad always told me that I was no better than anybody else and nobody was better than me. He taught me that everybody deserves a fair shot and that we shouldn’t leave anyone behind,” said the younger Biden, who is a social worker in Philadelphia. “That’s what you learn from a fighter who has been underestimated his entire life.”

“When I look at Dad, I see grace, strength and humility. I see one of the most consequential leaders ever in history,” Biden's youngest said to a round of applause.

“This is the fight of our lifetime,” the younger Biden said of the election looming ahead. “All of this, all of it is on the ballot. And I know that we can do this together because my dad helped show us the way.”

Ashley's speech came after the First Lady's remarks in the United Center. 

Jill Biden used her speech to pay tribute to her husband as a man who has repeatedly moved her over their decades of marriage.

She also praised Vice President Harris’ courage and urged Americans to get behind her.

“We are all a part of something bigger than ourselves and we are stronger than we know,” Jill Biden said. “It’s going to take all of us and we can’t afford to lose.”

President Biden soon after taking the stage to deliver his address called the first lady his family’s “rock” and said she still makes his heart go “boom, boom, boom.”