Kamala Harris Tells Joe Biden 'We Did It' in Phone Call After He Wins Pennsylvania

Democratic vice presidential candidate Kamala Harris congratulated her running mate Joe Biden following his win over President Donald Trump in a video message she shared on Twitter on Saturday.

The video shows Harris speaking into a cell phone, saying: "We did it. We did it, Joe. You're going to be the next president of the United States."

The Associated Press and several networks declared Biden the 46th president after calling the race for him in Pennsylvania, a state in which Biden overtook President Donald Trump's initial lead over the last few days. Pennsylvania's 20 electoral votes pushed Biden over the 270 needed to win the presidency.

Biden posted a message of his own on Twitter after he was declared the winner to thank his supporters.

"America, I'm honored that you have chosen me to lead our great country," he tweeted. The work ahead of us will be hard, but I promise you this: I will be a President for all Americans—whether you voted for me or not. I will keep the faith that you have placed in me."

Harris also made history on Saturday by becoming the first woman vice president.

Once the news of the Biden and Harris win broke, Harris' husband, Doug Emhoff, posted a picture of him hugging the next vice president with the caption: "So proud of you."

Though the Pennsylvania call delivered Biden a win in the Electoral College, ballot counting continued into the weekend across the country, with a few key swing states still up for grabs. Biden was also significantly in the lead in terms of the popular vote on Saturday, becoming the first presidential candidate in history to win more than 75 million votes in a race that was marked by record voter turnout.

Trump indicated in Twitter posts on Saturday that he did not intend to concede the election. His re-election campaign has filed multiple lawsuits in battleground states since Election Day, some of which attempted to halt ballot-counting efforts.

"I WON THIS ELECTION, BY A LOT!" Trump tweeted on Saturday morning. Twitter added a warning label to the tweet that read, "Official sources may not have called the race when this was Tweeted."

In a statement obtained by the Associated Press, Trump said Biden was "rushing to falsely pose as the winner." The president alleged without evidence that the Biden campaign endorsed counting "illegal ballots" and said his own campaign would take its cases to court.

"Beginning Monday, our campaign will start prosecuting our case in court to ensure election laws are fully upheld and the rightful winner is seated," Trump said.

Newsweek reached out to Harris for further comment, but did not receive a response in time for publication.

This story has been updated with additional information and background.