Kerry Washington is the host on DNC Day 4.
The final day of the Democratic National Convention wraps up with Kamala Harris' big moment: her acceptance speech in which she gets to tell her story to the millions of Americans watching.
Her campaign says, in addition to describing her middle-class upbringing, she will continue to stress optimism and patriotism -- the "politics of joy" -- the overall themes we've heard throughout the gathering.
White outfits peppered the convention hall here in an ode to suffragists and Harris' historic candidacy.
The outfit motif has been a hallmark of House Democrats, who have used the color to send a signal at major events, such as past state of the union addresses, including this year's, when Democrats sought to make a point about abortion.
-ABC News' Tal Axelrod
Chicago's DJ Metro got the crowd to its feet, dancing to "Lil Boo Thang" by Paul Russell, at the start of the night.
Convention organizers have 100,000 balloons ready to drop at the end of the evening, according to a source with knowledge.
-ABC News' Brittany Shepherd
The fourth and final night of the DNC is officially underway.
The theme of the night is "For our future" and will feature a keynote address from Vice President Kamala Harris as she accepts the party's nominee for president.
