Bernie Sanders, whose calls for a “political revolution” energized millions of voters across the nation, offered a long-awaited endorsement of his Democratic rival Hillary Clinton today, calling for unity just two weeks shy of the Democratic National Convention.

Standing alongside one another at an event in Portsmouth, N.H., Sanders, a self-described democratic socialist, congratulated Clinton for winning the nomination and vowed to do everything he can to help her beat presumptive Republican nominee Donald Trump.

“Hillary Clinton understands that we must fix an economy in America that is rigged and that sends almost all new wealth and income to the top one percent,” Sanders said, listing his reasons for endorsing her.

“Hillary Clinton understands that if someone in America orks 40 hours a week, that person should not be living in poverty.”

Democrats have coalesced around Clinton’s candidacy since she defeated Sanders in primaries last month in California and five other states, led by endorsements from President Barack Obama, Vice President Joe Biden and others.

Sanders has spent the past month seeking to influence the party’s platform at the Philadelphia convention and promote electoral reforms including allowing independents to participate in future primaries.

The platform includes many of his proposals, including a USD 15 an hour minimum wage, tougher restrictions on Wall Street and an end to the death penalty.

The event at a Portsmouth high school sought to project Democratic unity before Republicans formally nominate Trump next week in Cleveland but some Sanders’ supporters in the crowd did not appear to be ready to move on.

Chants of “Bernie” broke out in the gymnasium while opening speakers addressed the crowd, prompting Clinton’s faithful to chant, “Unity.” When Sen. Jeanne Shaheen, a Clinton supporter, told the audience, “We need to elect Hillary,” some Bernie supporters stood and shouted, “No,” which was followed by chants of “Hillary” in the crowd.

“It’s like he’s giving up if he endorses her,” said Steve Rand, a hardware store owner from Plymouth, New Hampshire, before the two candidates took the stage. “She stands for everything that I am against,” he added.