Democratic 2020 U.S. presidential nominee Joe Biden and his wife Jill wave to the crowd after speaking at his election rally, after the news media announced that Biden has won the 2020 U.S. presidential election over President Donald Trump, in Wilmington, Delaware, U.S., November 7, 2020.

Supporters of Democratic U.S. presidential nominee Joe Biden gather with their cars for a socially distanced election celebration as they await Bidens remarks and fireworks in Wilmington, Delaware, U.S. November 7, 2020.

Democratic 2020 U.S. presidential nominee Joe Biden speaks at his election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020.

Eloise Lawes, 6, holds a campaign sign while sitting on top of a car with her mother at a watch party after news media named Democratic presidential nominee Joe Biden the winner in the 2020 U.S. presidential election, in Wilmington, Delaware, U.S. November 7, 2020.

Democratic 2020 U.S. presidential nominee Joe Biden embraces his son Hunter Biden at an election rally, after the news media announced that Biden has won the 2020 U.S. presidential election over President Donald Trump, in Wilmington, Delaware, U.S., November 7, 2020. Andrew Harnik/Pool via REUTERS

Democratic 2020 U.S. presidential nominee Joe Biden gestures at his election rally, after the news media announced that he won the 2020 U.S. presidential election over President Donald Trump, in Wilmington, Delaware, U.S., November 7, 2020. Andrew Harnik/Pool via REUTERS

People wait at a watch party for Joe Biden's speech after news media named Democratic presidential nominee Joe Biden the winner in the 2020 U.S. presidential election, in Wilmington, Delaware, U.S. November 7, 2020.

Democratic 2020 U.S. presidential nominee Joe Biden speaks at his election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020.

People pose for a picture as they hold posters after news media named Democratic presidential nominee Joe Biden the winner in the 2020 U.S. presidential election, in Wilmington, Delaware, U.S. November 7, 2020.

Supporters of Democratic U.S. presidential nominee Joe Biden gather with their cars for a socially distanced election celebration as they await Biden’s remarks and fireworks in Wilmington, Delaware, U.S. November 7, 2020.

U.S. vice presidential nominee Kamala Harris waves as she arrives on stage for hers and Democratic 2020 U.S. presidential nominee Joe Biden election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020.

Supporters wait ahead of Democratic 2020 U.S. presidential nominee Joe Biden and vice-presidential nominee Kamala Harris's election rally, after news media announced that he has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020.

People watch fireworks after media announced that Democratic U.S. presidential nominee Joe Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S. November 7, 2020.

A man in a baby Trump costume joins supporters of Democratic U.S. presidential nominee Joe Biden as they gather with their cars for a socially distanced election celebration as they await Bidens remarks and fireworks in Wilmington, Delaware, U.S. November 7, 2020.

Democratic vice-presidential nominee Kamala Harris and Democratic 2020 U.S. presidential nominee Joe Biden greet supporters at an election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020. Andrew Harnik/Pool via REUTERS

Democratic 2020 U.S. presidential nominee Joe Biden and vice-presidential nominee Kamala Harris gesture during their election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020.

A woman dressed as the Statue of Liberty joins supporters of Democratic U.S. presidential nominee Joe Biden as they gather with their cars for a socially distanced election celebration as they await Biden’s remarks and fireworks in Wilmington, Delaware, U.S. November 7, 2020.

Democratic 2020 U.S. presidential nominee Joe Biden points a finger at his election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020.

Supporters of Democratic U.S. presidential nominee Joe Biden dance just outside the security perimeter of a planned election celebration as they await his remarks and fireworks in Wilmington, Delaware, U.S. November 7, 2020.

Biden supporters unable to reach the watch party due to Secret Service road blocks congregate below the Philadelphia 76ers facility in Wilmington, after news media named Democratic presidential nominee Joe Biden the winner in the 2020 U.S. presidential election, Delaware, U.S. November 7, 2020.

Democratic 2020 U.S. presidential nominee Joe Biden and his wife Jill, and Democratic 2020 U.S. vice presidential nominee Kamala Harris and her husband Doug, react to the confetti at their election rally, after the news media announced that Biden has won the 2020 U.S. presidential election over President Donald Trump, in Wilmington, Delaware, U.S., November 7, 2020. REUTERS/Jim Bourg

Democratic 2020 U.S. presidential nominee Joe Biden acknowledges the crowd at his election rally, after the news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020. Andrew Harnik/Pool via REUTERS

Democratic vice-presidential nominee Kamala Harris smiles as she speaks to supporters at a election rally, after news media announced that Biden has won the 2020 U.S. presidential election, in Wilmington, Delaware, U.S., November 7, 2020. Andrew Harnik/Pool via REUTERS

Democratic 2020 U.S. president Joe Biden speaks at his election rally, after the news media announced that Biden has won the 2020 U.S. presidential election over President Donald Trump, in Wilmington, Delaware, U.S., November 7, 2020. Andrew Harnik/Pool via REUTERS

Supporters of Democratic U.S. presidential nominee Joe Biden gather with their cars for a socially distanced election celebration as they await Bidens remarks and fireworks in Wilmington, Delaware, U.S. November 7, 2020.