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DNC 2024 Day 2 live updates: 'Yes, she can': Obama endorses Harris, blasts Trump
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.
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DNC roll call commences
The roll call for the DNC has begun.
State delegates will go in alphabetical order, with a DJ playing music related to each state.
Josh Shapiro: Harris showing 'real momentum'
Pennsylvania Gov. Josh Shapiro told ABC News Live Prime anchor Linsey Davis in an interview from the DNC that he is seeing "incredible enthusiasm" for the Harris-Walz campaign on the ground.
"Kamala Harris is showing up in communities that are oftentimes ignored and left behind," Shapiro said, adding that she's sending a message to Pennsylvanians that she cares about them.
"I think as this race progresses, you're going to continue to see real momentum on her part," he said.
Trump friends -- and foes -- on the ground in Chicago
Spotted at the United Center snapping selfies was Michael Cohen, Trump's former attorney who was a star witness in his New York hush money trial.
The Trump campaign, meanwhile, continued to hold its daily press conference this morning just three miles away from the DNC site to "remind folks what Donald Trump is running for."
At the press conference, which focused on the issue of crime, Rep. Byron Donalds sought to counter Harris' prosecutor persona by painting her as soft on crime and pointing to some of her previous statements -- including her previous call to "redirect resources" from police.
Donalds also pushed a familiar line of attack against the Harris campaign -- that they are lacking in enough policy positions and instead are focusing on "joy and vibes."
ABC News asked the Florida Republican what type of messaging he is looking to see from Trump on the campaign trail this week amid tightening polls.
"I think this election is really a choice election, it's a contrast election, even more so than some others. We have very stark differences with Kamala," Donalds said, while pointing to the subjects of immigration, crime and foreign policy.
-ABC News' Olivia Rubin
Michigan Sen. Gary Peters brings dozens of retired Teamsters on stage
Michigan Sen. Gary Peters appeared on stage with dozens of retired Teamsters to highlight Harris-Walz's commitment to unions.
"Kamala Harris and Tim Walz grew up just like me. And I know, I know they will fight for all of us," Peters said. "They will make it easier to raise our families and to retire with dignity. Just look at the record. As vice president, Kamala Harris helped pass legislation that finally, finally allowed Medicare to negotiate and lower the cost of prescription drugs."
Ken Stribling, president of the National United Committee to Protect Pensions, also addressed the crowd, saying, "As president, I know Kamala Harris will have our backs. She will fight for our retirement, Social Security and Medicare."
-ABC News' Brittany Shepherd