Harris addressed the DNC crowd from a rally in Milwaukee and thanked the delegates for nominating her as the Democratic presidential nominee.

Harris spoke at the Fiserv Forum, where Trump accepted the nomination last month.

"This is a people-powered campaign, and together we will chart a new way forward," she said.

Read more about the Harris campaign's decision to hold a rally in the battleground state of Wisconsin on the same night as the DNC here.

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Kamala Harris makes virtual DNC appearance from Milwaukee rally

The vice president made remarks that were broadcast during the second day of the Democratic National Convention in Chicago.

California, Harris' home state, delivered the delegates to send Harris over the top during the ceremonial roll call.

Gov. Gavin Newsom announced that the state is casting its 482 votes for Harris, whom he called a "bright star" whose star has gotten even brighter as she served as the state's attorney general, a U.S. senator and now as vice president.

"Kamala Harris has always done the right thing, a champion for voting rights, civil rights, LGBTQ rights," Newsom said. "It's time for us to do the right thing -- and that is to elect Kamala Harris as the next president of the United States of America."

Harris is already officially the nominee after the DNC held a virtual roll call earlier this month. Still, the symbolism, and the relationship between Newsom and Harris, is significant.

Through the ceremonial roll call, showcasing delegates from all corners of the U.S., the Democratic party is "making it clear they are the party that represents the country," White House correspondent MaryAlice Parks told ABC News Live Prime anchor Linsey Davis.

"They are trying to make it clear that they are building a multi-generational, multi-racial coalition," she said.

Delegates are partying on the convention floor, with hot songs from artists from each state blaring as delegates are cast for Harris.

-ABC News' Tal Axelrod