"Who is going to advise him to drop out?"

If Sanders remains in the race, it will be in part to keep his “political revolution” alive. According to people familiar with his thinking, Sanders will not only consider what’s best for his campaign, but also the progressive movement.

Many of Sanders’ aides and allies also expect him to press onward after Tuesday. They see a benefit in amassing as many delegates as possible in order to influence the party platform at the Democratic National Convention this summer — even if Sanders himself can’t win the nomination.

“I think there’s a very good chance that he will stay in,” said Larry Cohen, chair of Our Revolution, a group founded by Sanders in 2016. “The number of delegates you have, the number of people on the platform committee is absolutely critical.”