Why Chelsea Clinton's Introduction of Hillary Tonight Matters

PHILADELPHIA, Penn. -- Chelsea Clinton may be a former first daughter, but she'll be the second daughter to introduce her parent as a presidential candidate in the past week.

Ivanka Trump, who Chelsea Clinton was reportedly close with, was also picked to give the speech immediately preceding her father when he accepted the Republican presidential nomination in Cleveland last week.

When Clinton takes the stage tonight to introduce her mother, the comparisons between her and Ivanka -- both young mothers with careers of their own who have grown up in the public eye -- will be immediate.

And Clinton has already started to pick apart some of Ivanka Trump's comments about how her father. Donald Trump, will "fight for equal pay for equal work, and I will fight for this too, right alongside of him."

At a panel discussion hosted by Glamour and Facebook on Tuesday, Clinton was asked how she would respond to her friend about her claims, answering the question with a question.

"How would your father do that, given it's not something he's spoken about? There are no policies on any of those fronts that you just mentioned on his website -- not last week, not this week -- so I think the how question is super important in politics as it is in life," Clinton said.

"It really matters to me that my mom in this election consistently has told you how she's going to do everything, whether that's on gun control or protecting a woman's right to choose or any of the things we've talked about. She also tells you how she's going to pay for it," she said.

Clinton, 36, has had experience introducing her mother on the campaign trail in the past, but tonight's appearance is clearly going to be the most important, history-making speech both she and her mother will have made.

As it was in the case in Cleveland, convention attendees see the symbolic importance of having Hillary Clinton's daughter introduce her, and view it as an advantage.

Nicole LaChapelle, a delegate from Massachusetts, said that it was especially notable since Hillary Clinton could have chosen to have her husband introduce her tonight rather than having him speak on Tuesday.

"Bravo to Bill Clinton," LaChapelle told ABC News, saying he gave a "great speech, great tone, and then stepping aside and having Chelsea introduce her."

"Chelsea has her own career, she has her own kids, her husband isn't overly involved in politics and she's jumping in, I feel because it's her mom and she feels she's the best candidate," she said.

Chelsea doesn't parse any words when it comes to her support for her mother.

"I am deeply biased towards my mother," she said at the Facebook event earlier this week.

"I think it's really hard for any of us to imagine what we can't see so I am just really proud that little girls will be able to redirect their imaginations in other ways because [of] my mother," she added.