California Gov. Gavin Newsom will lead his state's delegation at the DNC on Tuesday, delivering the delegates that send California native, Vice President Kamala Harris, over the top of the delegate threshold for the nomination in a ceremonial roll call.

Harris is already the nominee, but Tuesday's ceremonial roll call is a gesture in name only.

Politico was first to report the news.

-ABC News' Zohreen Shah and Brittany Shepherd

Biden closed his speech by citing a verse from the song "American Anthem," which he says has meant a lot to him and his family.

He said he would spare the crowd his singing so just quoted the verse: "America, America, I gave my best to you."

"I gave my best to you for 50 years," Biden said. "I hope you know how grateful I am to all of you."

He ended his speech saying he's more optimistic about the future than he was when he was first elected to the Senate at the age of 29.

"Folks, we just have to remember who we are," he said. "We're the United States of America. And there's nothing we cannot do when we do it together."

After giving remarks for roughly an hour, Biden was joined by first lady Jill Biden on stage as the song "Higher Love" blared throughout the stadium.

They were soon joined by Vice President Harris and second gentleman Doug Emhoff, both of whom exchanged hugs with Biden.

Other Biden family members also embraced him, including his son Hunter Biden and several of his grandchildren.

At one point, Harris and Biden clasped their hands together and raised them in the air.

All around the stadium, attendees held up vertical "We love Joe" signs echo the shape of the delegation signposts. Former House Speaker Nancy Pelosi was seen on the convention floor with the sign.

Others held up cards that read, "Thank you Joe."

In their box, Vice President Kamala Harris and her running mate Minnesota Gov. Tim Walz sat with their spouses listening to Biden's speech. Walz was emotional throughout much of the president's remarks.

Biden continues to "fine tune" his speech after working on it over the weekend and is in "great spirits" as he heads to the convention, White House press secretary Karine Jean-Pierre told reporters aboard Air Force One.

"Yeah, look, the president is certainly going to continue to fine tune the speech, if you will. He had an opportunity to work on it this past weekend with Mike Donilon and Vinay Reddy, and so he's very much looking forward to this moment. As I just said, it is a fulfilling moment for him, and he's excited. He's excited," Jean-Pierre said.

"It's a big night. He's looking forward to it. He's looking forward to addressing the Democratic Party and and obviously the nation. It's a big night," she added

Jean-Pierre said Biden was in a good mood on the plane ride over.

"He's in great spirits and I think what you'll see is a president who has put his kind of his personal agenda aside and putting the country first, and that's who he's always been throughout his career, more than 50 years," Jean-Pierre said.

Read more about what observers expect from Biden's opening night speech here.

-ABC News' Cheyenne Haslett