Unlock stock picks and a broker-level newsfeed that powers Wall Street.

Why It’s Time for Bernie Sanders to Support Hillary Clinton
Sanders is within three points of Clinton in the Democratic race. · Fortune

Bernie Sanders has achieved astonishing things in the 2016 U.S. presidential race. He has single-handedly resurrected socialism in American political discourse. He has moved Clinton to the left on virtually every issue. Most importantly, he has brought millions of young people into politics. According to CIRCLE, more youth have voted for Sanders than for Clinton and Trump combined.

But Bernie Sanders is not going to be the Democratic nominee for president. He isn't going to quit or suspend his campaign. But barring the impossible, he is going to lose.

What Sanders does between now and the end of the Philadelphia convention this summer will largely determine whether he is able to consolidate all his achievements. In fact, these next few weeks will decide whether his message and movement will continue to impact American politics.

Even after Tuesday's massive defeat in a string on Northeast states, Sanders insisted that "we are in this campaign to win." But he also gave his first hint of a different agenda. He said that he is out to "win every delegate we can," so that he can "fight for a progressive party platform" at the Convention in July. Sanders could score some real victories here, including commitments to a $15 an hour U.S. minimum wage, universal health care, and tougher regulations for Wall Street.

But while party platforms seem crucial during the convention, with delegates fighting over every word, they lose their significance immediately thereafter.

The more important question is whether he will be given the opportunity to speak.

The "unity" convention speech by the runner up is always a high risk/high reward moment for the party and its nominee. Edward Kennedy's speech at the 1980 convention barely mentioned Jimmy Carter, and it was embarrassingly clear that he did not think much of the party's nominee. It is one reason why Carter's campaign against Ronald Reagan failed so badly. On the other hand, a unity speech really can unify. At the 2008 convention, Hillary Clinton herself declared that "Barack Obama is my candidate and he must be our president." The campaign between her and Obama was at least as rough as the current Democratic contest, but Clinton's full-throated endorsement made it much easier for her supporters to get behind Obama and secure his victory.

Of course, the party is under no obligation to offer Sanders such an opportunity. And if they have reason to fear that Sanders’ speech would be more like Kennedy's and less like Clinton's, they won't.