In the wake of Mark Mellman’s death last week, the longtime Democratic pollster is being remembered for his leadership of Democratic Majority for Israel, an advocacy group he helped launch in 2019 to counter a growing hostility toward Israel on the left, a value proposition that proved prescient. 

But his role leading the group, in what turned out to be the capstone to his decades-long career, was serendipitous — and almost didn’t happen. 

The group’s founding board members “reached out to Mark for advice on who we should hire,” one of the board members, speaking anonymously to discuss the details of the group’s founding, told Jewish Insider. “And Mark said, ‘I’ll do it.’ We went, ‘OK.’ We weren’t expecting that.”

San Francisco Democratic fundraiser Sam Lauter, a former AIPAC activist who has been involved with DMFI from the beginning, said Mellman’s role atop DMFI gave the group “instant credibility.” Weeks later, Mellman was weighing in on a series of tweets from then-freshman Rep. Ilhan Omar (D-MN) that trafficked in antisemitic tropes. 

As political activists reflect on Mellman’s life, several Jewish Democrats told JI that his clear-eyed support for Israel — and his ability to articulate its strategic importance to Democrats — will leave a lasting impact on the party.

“He really worked hard to help candidates understand why the U.S.-Israel relationship was so important, why it was important to the United States [and] why it was important to support that relationship,” said former Rep. Kathy Manning (D-NC), who became DMFI’s board chair this year. “I think he brought clarity to that discussion whenever he had it, and he was unequivocal about it. I think that helped a lot of people think about how you talk about the relationship to people who don’t necessarily understand it or don’t support it.”

While Mellman, who died at 70 last Thursday of pancreatic cancer, has long been involved in Jewish causes and conducted research for Jewish groups, that only became his bread-and-butter in the final years of his life. Over a decades-long career as a leading pollster, he helped elect prominent Democrats across the country. 

“As someone who has come up through Jewish Democratic politics professionally over the past two decades, there’s no bigger giant in the field,” said Aaron Keyak, who most recently served in the Biden administration as deputy antisemitism special envoy. 

Mellman worked for 30 U.S. senators and over two dozen members of Congress, and he advised Israeli politician Yair Lapid and his Yesh Atid party. Nate Silver, the founder of the polling website FiveThirtyEight, once called Mellman the most accurate pollster in the country. Mellman was the chief pollster for John Kerry’s presidential campaign against George W. Bush in 2004. 

According to those who knew him, he never wavered on his core values. He spoke publicly about turning down requests from Democrats who didn’t align with his positions in support of abortion access and gun control. Most of all, he stuck to his support for Israel. 

“He’s as blue of a Democrat as anyone, and also understands that just because you identify as a member of the Democratic Party doesn’t mean you need to support everything all Democrats do, or even specific candidates that are nominated by the party,” said Keyak. “He’s someone who is true to his convictions in a time when far too many in Washington, D.C., shape their policy beliefs based off of the individual politician that the party has nominated.”

Last year, Mellman and DMFI invested heavily to challenge anti-Israel Democratic incumbents Jamaal Bowman (D-NY) and Cori Bush (D-MO). The group’s efforts prevailed. 

“Success in this profession and in this industry is not an easy place to achieve, and very few people achieve it and hold on to their integrity and their ethics and just still be a mensch,” Lauter said. “Accompanying all the ability that he had, Mark was a mensch.”