Democrats can win this election by championing the working class | Katrina vanden Heuvel

One of the most compelling speeches at last week’s Democratic national convention wasn’t followed by balloons. Delivered just a few hours before Kamala Harris ’s primetime address, it came from a man with – until now, anyway – zero name recognition. John Russell is a mulleted tree-stump grinder turned activist journalist from rural Ohio. He seemed a bit of a misfit next to glamorous speakers like Oprah and the guy who played the president on Scandal. But on the final night in Chicago, Russell took the stage to give what my colleague Bhaskar Sunkara called “the most radical speech” in the convention’s history.

His blistering remarks cut through the convention’s fever dream to deliver a necessary wake-up call. He warned about the working class’s political disillusionment. He demanded that Democrats reclaim their heritage as fearless defenders of labor. And he issued ambitious prescriptions for action on everything from a living wage to climate crisis. On that last issue, he reminded the gathered delegates that environmental degradation isn’t just a matter of coastal (elite) flooding, but of strip mining and poisoned water in flyover country. Perhaps most impressively, he spoke all this truth to power in only two minutes. As he said himself: “It is our moment to live up to. Let’s get after it.”

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This barn burner reminded the Democratic party that elevating voices like Russell’s for just one night in August won’t cut it: the Harris campaign needs to center heartland populism all the way through November.

Such an emphasis has become even more imperative with JD Vance’s ascension to the No 2 spot on the Republican ticket. Though doughnuts may baffle him , this native son of Appalachia does have a knack for enticing Rust belt voters with a menu of faux-populist policies . From his support for unions to his endorsement of Lina Khan, the US Federal Trade Commission chair, Vance’s words make it seem like the only thing he despises more than cat ladies is corporations. But as Russell pointed out, Vance’s work for Peter Thiel and his fealty to Donald Trump prove his true loyalties lie with crypto miners, not coal miners.

Authentic populists like Bernie Sanders and Alexandria Ocasio-Cortez can certainly counter-signal Vance’s siren song. Sanders, for his part, delivered a typically rousing address at the DNC, calling on his fellow Democratic leaders to “stand up to wealth and power and deliver justice for people at home and abroad”.

Related: Midwestern guys: Vance and Walz’s opposing views of being from the US heartland

The Democrats’ populist bench extends beyond elected officials, too. The night before Sanders’s remarks, Shawn Fain, the United Auto Workers president, appeared onstage in a red T-shirt that declared “Trump Is A Scab.” Though Sean O’Brien, the Teamsters president, had made a tentative courtship of the right by speaking at the Republican convention in July , Fain affirmed that labor’s true home remains with the left.

But no one can rebut the Hillbilly Elegist more effectively than on-the-ground Appalachians like Russell. He reports on heartland labor issues for a progressive news outlet called More Perfect Union , enabling him to connect with the very workers who could swing races up and down the ballot. A video that played before his convention remarks showed him meeting with construction workers in rural Tennessee. They had just joined a union for the first time, but it may have also been the first time they met a Democrat who shared their tribulations.

And Russell isn’t the only self-described redneck trying to build a grassroots movement. Beth Howard , for example, is organizing other coal miners’ daughters in eastern Kentucky on behalf of a program called Showing Up For Racial Justice . It aims to mobilize predominantly white communities in the south to combat racism and classism alike. And in the Central time zone, Midwest Academy continues to pump out progressive organizers who know what’s the matter with Kansas and how to fix it. Founded 51 years ago to check a different surge of rightwing populism, Midwest Academy has become the training ground for blue activists in red states. Its graduates would make mighty canvassers for Harris.

Related: I’m from Appalachia. JD Vance doesn’t represent us – he only represents himself | Neema Avashia

Joe Biden has made headway in reclaiming the working class as the Democratic base. He has declared himself the most pro-union president ever, and his legislative accomplishments undoubtedly make him the best ally to labor in the White House since at least Lyndon Johnson. Last year, More Perfect Union even helped connect Biden with striking autoworkers, opening the way for him to make history as the first president to join a picket line. Harris would do well to follow her boss’s lead and embrace John Russell and his fellow activists – not just as surrogates, but advisers.

To paraphrase Russell, this is Harris’s moment to live up to – or live down.

• Katrina vanden Heuvel is editor and publisher of the Nation, she is a member of the Council on Foreign Relations, and has contributed to the Washington Post, New York Times and Los Angeles Times.