The progressive push to unseat a veteran Democratic power broker fell short Tuesday, when Rep. Richard Neal defeated high school teacher Jeromie Whalen in Massachusetts’ 1st Congressional District primary.

Neal, 77, has represented western Massachusetts in Congress for nearly four decades and has built considerable influence as the top Democrat on the powerful tax-writing House Ways and Means Committee. His 39-year-old challenger ran on a platform that included Medicare for All, higher taxes on the wealthy, abolishing Immigration and Customs Enforcement and a pledge to reject campaign contributions from corporate PACs.

The race tested whether progressive voters were ready to replace a longtime Democratic incumbent, even if it meant giving up the clout Neal’s seniority brings western Massachusetts.

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Whalen sought to cast Neal as a representative of the Democratic establishment unwilling to take on wealthy interests and corporate power, while pitching himself as part of a younger generation pushing the party further to the left.

Neal, meanwhile, made his experience and position in Washington central to his case for re-election, arguing that his seniority gives the district influence in Congress that would be difficult for a first-term lawmaker to replicate.

The contest also unfolded against a broader debate inside the Democratic Party over its aging leadership and whether longtime incumbents should step aside for a younger generation. Progressive stalwart Sen. Ed Markey, 80, defeated a more moderate challenger 33 years his junior on Tuesday night. 

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Considered the “Dean” of the Massachusetts House delegation, the 77-year-old Democrat is once again seeking re-election, hoping to close in on almost 40 years of representing western Mass. in Washington. (Graeme Sloan/Bloomberg/Getty Images)

Neal’s position on the Ways and Means Committee also gave the race significance beyond western Massachusetts.

The panel sits at the center of congressional fights over taxes and other major economic policy. His victory also ultimately preserves the seat of one of the House Democratic caucus’ most senior members while turning back a challenge built around the argument that the party needs generational and ideological change.

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The race became a choice between replacing a longtime Democratic incumbent with a new progressive upstart. (Joseph Prezioso/AFP/Getty Images)

There is no Republican filed to run against Neal in the general election.