House Speaker Nancy Pelosi endorses Joe Biden for president

"Today, I am proud to endorse Joe Biden for President of the United States because he will be an extraordinary President. He knows how to get the job done," she said in a video.

Citing his work on the Affordable Care Act and Cancer Moonshot program, Pelosi said Biden has "been with us every step of the way to protect American's quality affordable health care."

"And as we face coronavirus, Joe has been a voice of reason and resilience with a clear path to lead us out of this crisis," she said.

"For these and other reasons, I am proud to endorse Joe Biden for President, a leader who is the personification of hope and courage, values authenticity and integrity," she said.

The California Democrat did not announce her support for a candidate during the primaries, but called for unity among the Democratic Party as Vermont Sen. Bernie Sanders started to surge in the polls. Sanders has since dropped out of the race, leaving Biden as the party's presumptive nominee.

This is story is breaking will be updated.