Here is part of Sanders' message to his supporters:
I wish I could give you better news, but I think you know the truth. And that is that we are now some 300 delegates behind Vice President Biden, and the path toward victory is virtually impossible. So while we are winning the ideological battle, and while we are winning the support of young people and working people throughout the country, I have concluded that this battle for the Democratic nomination will not be successful. And so today I am announcing the suspension of active campaigning, and congratulate Joe Biden, a very decent man, on his victory. Please know that I do not make this decision lightly. In fact, it has been a very painful decision. Over the past few weeks Jane and I, in consultation with top staff and many of our prominent supporters, have made an honest assessment of the prospects for victory. If I believed we had a feasible path to the nomination I would certainly continue the campaign. But it's not there. I know there may be some in our movement who disagree with this decision, who would like us to fight on to the last ballot cast at the Democratic convention. I understand that position. But as I see the crisis gripping the nation – exacerbated by a president unwilling or unable to provide any kind of credible leadership – and the work that needs to be done to protect people in this most desperate hour, I cannot in good conscience continue to mount a campaign that cannot win and which would interfere with the important work required of all of us in this difficult hour. But let me say this very emphatically: As you all know, we have never been just a campaign. We are a grassroots multi-racial, multi-generational movement which has always believed that real change never comes from the top on down, but always from the bottom on up. We have taken on Wall Street, the insurance companies, the drug companies, the fossil fuel industry, the military industrial complex, the prison industrial complex and the greed of the entire corporate elite. That struggle continues. While this campaign is coming to an end, our movement is not. Martin Luther King, Jr. reminded us that "The arc of the moral universe is long, but it bends toward justice." The fight for justice is what our campaign was about. The fight for justice is what our movement remains about. And, on a practical note, let me also say this: I will stay on the ballot in all remaining states and continue to gather delegates. While Vice President Biden will be the nominee, we should still work to assemble as many delegates as possible at the Democratic convention where we will be able to exert significant influence over the party platform and other functions. Then, together, standing united, we will go forward to defeat Donald Trump, the most dangerous president in modern American history. And we will fight to elect strong progressives at every level of government – from Congress to the school board.