DNC 2024 Day 1 live updates: Emotional Joe Biden casts election as choice to 'save democracy'
"I hope you know how grateful I am to all of you," Biden said.
Democrats kicked off their convention Monday with a who's who of guests who all touted Vice President Kamala Harris' run for the White House.
Several topics came up during the night including the future of reproductive rights and Project 2025.
Harris made a surprise appearance after several Democratic VIPS took the stage, including Rep. Alexandria Ocasio-Cortez.
The main stars of the night were some of the Democrats' longstanding figures including Secretary of State Hillary Clinton.
But the main spotlight came as President Joe Biden spoke to the cheering crowd, reflecting on his four years as president and his decision to "pass the torch" to Harris.
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NBA coach Steve Kerr greeted with applause
Golden State Warriors coach Steve Kerr got a standing ovation when he walked on stage, just over a week after he coached the U.S. Olympic men's basketball team won gold.
Chants of "USA" stretched across the convention floor as he started speaking.
"It was the proudest moment of my life," he said, recounting the team's victory in Paris earlier this month.
Kerr called the audience to action -- asking the country to follow in the footsteps of the American basketball team's gold medal performance in Paris.
"After the results are tallied [on election] night, we can, in the words of the great Steph Curry, we can tell Donald Trump, 'night-night.'"
Protests expected inside convention hall during Biden's remarks
Convention staff is preparing for possible disruptions over Gaza during President Joe Biden's keynote speech.
ABC News has heard from staff and activists that they likely won't come from uncommitted delegates on the convention floor, but are expected to come from activists who have passes into the arena who are in sections higher up.
-ABC News' MaryAlice Parks and Isabella Murray
Actor Tony Goldwyn, tonight's host, appears
Actor Tony Goldwyn, who famously played a president on TV in ABC's "Scandal," has arrived for the primetime hour of the DNC's first night.
Goldwyn said the choice between Harris and Trump is between "two very different futures" for our middle class, reproductive rights, climate, security, schools and "the future of our very democracy."
He said Harris has a message for America.
"It is a message that's joyful, not mean-spirited, a message of public service, not self-service, a message of optimism and opportunity, not chaos and division. A message that has woken us up to who we are, to who we've always," he said.
Harris gets raucous ovation in brief appearance
Harris sent the crowd into a frenzy when she walked onto the stage at the United Center, with attendees jumping to their feet in surprise.
"It is so good to be with everyone this evening in this hall and everyone at home. This is going to be a great week," she said to more applause.
Harris also gave Biden his flowers, sparking chants of "USA!"
"And I want to kick us off by celebrating our incredible president, Joe Biden, who will be speaking later tonight," she said. "We are forever grateful to you."
Harris walked off to her campaign anthem, Beyonce's hit song "Freedom."