Obama praised President Biden and offered support for Harris.
Vice President Kamala Harris officially became the official Democratic presidential nominee during the second night of the Democratic National Convention.
The night included a lively and upbeat roll call vote of delegates that featured a DJ, some celebrities and energetic speeches. Also, Harris, who campaigned in Milwaukee, thanked the crowd in a live-streamed message.
Second gentleman Doug Emoff talked about his long relationship with Harris and touted her vision for the country.
But the night's biggest headline was the return of former President Barack Obama and first lady Michelle Obama to the DNC stage. Both stressed what's at stake in this election and pushed Americans to come together to bring the country to a better future.
Stephanie Grisham, former President Trump's third White House press secretary, will speak tonight at the DNC.
"I never thought I'd be speaking at a Democratic convention. But, after seeing firsthand who Donald Trump really is, and the threat he poses to our country, I feel very strongly about speaking out," Grisham said in a statement to ABC News.
Protesters interrupt Tim Walz's women's caucus remarks
Minnesota Gov. Tim Walz's remarks Tuesday to the women's caucus at the DNC were interrupted by pro-Palestinian protesters.
Walz was recognizing the role women had in aiding him as governor, and was praising former Secretary of State Hillary Clinton and Vice President Kamala Harris before demonstrators started chanting, "Stop killing women in Gaza! Stop killing women in Gaza!"
They unfurled banners in the middle of the room as the audience tried to drown out their protest.
Walz briefly paused his remarks and looked at the protesters before continuing his speech, without acknowledging them.
The protesters were escorted out of the ballroom where they continued their calls for a cease-fire in Gaza and for the end of arms transfers to Israel.
A delegate, who only identified herself as Michelle and a New York delegate, fiercely countered the protesters, accusing them of helping Donald Trump by protesting.
-ABC News' Fritz Farrow
There were 10 arrests made during Monday's fencing breach at the DNC, Chicago Police Superintendent Larry Snelling told reporters on Tuesday.
"I couldn't be more proud of how Chicago Police Department responded under those circumstances," Snelling said. "We put on display the trainings and the preparation that we've been engaged in for over a year now. That being said, moving forward, we do expect to see, or protest or demonstrate tactics again. We're up to the challenge."
Snelling said there were 13 arrests total on Monday, which ranged from criminal trespass to battery on a police officer.
On reports that protesters were "assaulted" by police, the superintendent pushed back hard.
"Those police officers responded perfectly, and we got body cam footage to prove it. They were not hospitalized for injuries."
-ABC News' Luke Barr
For the first half of 2024, a huge question for the Biden campaign was whether he would lose a critical amount of support with key blocs of voters that supported him in 2020, such as Black voters and young voters. Now, however, Harris is running instead, and her coalition isn’t necessarily the same as Biden’s.
In a new article, 538 Senior Researcher Mary Radcliffe took a deep dive into national polls to answer the question of who, exactly, makes up the Harris coalition. She also compared Harris’ polling numbers among various racial, gender and age groups to Biden’s. It turns out that Harris has shored up a lot of Biden’s weaknesses -- and it’s pretty surprising which group she is outpacing him with by the most.
—538’s Nathaniel Rakich
