Bernie Sanders helped conclude the first day of the 2020 Democratic National Convention by pleading with progressives to jump behind Joe Biden’s campaign, claiming “the future of our democracy is at stake” in the November election.

“My friends, I say to you, and to everyone who supported other candidates in this primary and to those who may have voted for Donald Trump in the last election: The future of our democracy is at stake. The future of our economy is at stake. The future of our planet is at stake,” Sanders said in a prerecorded speech filmed in his Burlington, Vermont, home.