Less than a week after dropping out of the race for President in 2020, Sen. Bernie Sanders (I-VT) formally endorsed former Vice President Joe Biden, as the two rivals vowed to work together on important progressive issues and rally supporters to defeat President Donald Trump in November.

"Bernie, I want to thank you," Biden said from his home for Delaware, in a split screen internet live stream with Sanders, speaking from his home in Vermont.

"I know that there is an enormous responsibility on your shoulders right now," Sanders said to Biden. "And it's imperative that all of us work together."

The two men said they had agreed to set up a series of task forces to explore ways to forge common goals on major issues of interest on the economy, climate change, immigration, education, criminal justice and more.

"We need you in the White House," Sanders said to Biden. "And I will do all that I can to see that that happens, Joe."

The move by Sanders to endorse Biden in mid-April stands in stark contrast to four years ago, when the Vermont Senator's fight against Hillary Clinton dragged on into June.

"I know we share the understanding that we've got to go forward," Sanders said, while still emphasizing his desire to see Biden pay attention to issues which drove the Sanders campaign, like economic justice, climate change, and more.

“We have our differences,” Sanders frankly admitted, but he made clear those policy differences cannot be allowed to stop the to knock President Trump out of the White House.

“It's a big deal,” Biden said on the Sanders endorsement, helping undercut some of the voices from the Sanders side, who have questioned why they should support Biden in November.