Massachusetts Sen. Ed Markey defeated Rep. Seth Moulton by nearly 30 points in Tuesday's Democratic Senate primary, a decisive rebuke to the party's younger candidates even as aging incumbents elsewhere have been falling one by one.
Markey, 80 years old and a fixture in elected office since 1973, took 64.9% of the vote to Moulton's 35.1%, with more than 95% of ballots counted, the Daily Caller reported. The Associated Press tabulated the results. Moulton, a 47-year-old congressman who ran as the moderate alternative, was not close.
The margin tells a straightforward story: Massachusetts Democratic voters chose the furthest-left option on the ballot and did not care that he first won office when Richard Nixon sat in the White House. Markey has held elected positions continuously for 53 years, longer than Moulton has been alive.
Markey did not moderate to fend off a younger rival. He doubled down. His campaign website lists support for abolishing ICE, Medicare for All, allowing irreversible procedures for minors who identify as transgender, and "universal healthcare." He co-sponsored the Green New Deal. Three days before the primary, on August 29, C-SPAN captured him making his closing argument to voters in terms that left no ambiguity.
C-SPAN posted a clip of Markey's remarks on social media:
"We need to slash the defense budget and we need to impeach Donald Trump now."
That platform, gut defense spending, impeach the sitting president, dismantle immigration enforcement, carried him to a blowout win. Moulton, by contrast, campaigned on affordability, outlined a plan for encounters with ICE rather than calling for the agency's abolition, and proposed a public option for healthcare instead of a full government takeover. The moderate lane in a Massachusetts Democratic primary proved to be a dead end.
The race amounts to a fresh data point for Democrats who have made impeachment a centerpiece of their midterm pitch. Markey's landslide suggests that in deep-blue states, at least, the most aggressive anti-Trump posture is a political asset rather than a liability.
Moulton's endorsement roster read like a who's who of the Democratic Party's pragmatic wing. New Jersey Gov. Mikie Sherrill, New York Rep. Pat Ryan, and Rhode Island Rep. Seth Magaziner all backed him, per his campaign website. None of it mattered.
Markey countered with endorsements from Sen. Bernie Sanders of Vermont, Rep. Alexandria Ocasio-Cortez of New York, Massachusetts Sen. Elizabeth Warren, and Massachusetts Rep. Ayanna Pressley, a member of the progressive "Squad." In a state where registered Democrats outnumber Republicans by roughly four to one, the left flank of the party delivered the votes.
This is the second time Markey has dispatched a younger challenger with ease. In 2020, he beat Joe Kennedy III, then 39, and a member of the most famous family in Massachusetts Democratic politics, in a primary that was supposed to be a generational changing of the guard. Markey was 74 at the time. Kennedy, the nephew of current Health and Human Services Secretary Robert F. Kennedy Jr., has not held office since.
Markey's survival stands out because the broader trend in Democratic primaries this cycle has run sharply against aging incumbents. In July, Melat Kiros defeated longtime Colorado Rep. Diana DeGette in a congressional primary. Three House Democrats over 70, Michigan Rep. Shri Thanedar, Connecticut Rep. John Larson, and New York Rep. Adriano Espaillat, all lost their races to younger challengers.
Others did not wait for voters to push them out. New York Rep. Jerry Nadler, Texas Rep. Lloyd Doggett, and Eleanor Holmes Norton all faced pressure to step aside and chose not to run for reelection. Tennessee Rep. Steve Cohen dropped out after the state redrew his district lines, clearing the way for a primary challenge from 31-year-old state Rep. Justin Pearson.
Amanda Litman, founder of the left-wing group Run For Something, framed the trend in comments to Axios:
"Democratic voters are hungry for a new generation of leaders who can credibly argue they'll fight for change."
That hunger has been real, except, apparently, in Massachusetts. Markey's win suggests the appetite for generational change has limits when the incumbent is willing to outflank any challenger from the left. Voters who want someone to "fight for change" concluded that the 80-year-old calling for impeachment and defense cuts was fighting harder than the 47-year-old talking about affordability.
The Democratic Socialists of America are on pace to field their largest congressional delegation in history during the 2026 cycle. Markey is not formally a DSA member, but his platform, Green New Deal, abolish ICE, slash defense, sits comfortably within the organization's policy orbit. His blowout win ratifies the leftward pull that has reshaped Democratic primaries from coast to coast.
Markey's political career spans a stretch of American history that is difficult to overstate. He won his first seat in the Massachusetts State House in 1973, moved to the U.S. House in 1976, and reached the Senate in 2013. He has been in elected office through nine presidencies. Seth Moulton was born roughly five years after Markey's career began.
For a party that spent 2024 agonizing over the age of its presidential nominee, the Massachusetts result is an awkward fit. Democrats have poured record sums into primaries where younger insurgents challenge entrenched incumbents. The theory is that new faces bring energy, credibility, and electoral viability. Markey's 30-point win says something different: in the bluest precincts, ideology outranks biography.
Moulton positioned himself as a pragmatist who could appeal beyond the progressive base. His plan for ICE encounters, rather than abolition, acknowledged that most Americans do not want to dismantle immigration enforcement. His public-option healthcare proposal accepted the political reality that single-payer remains unpopular nationally. None of those calculations carried weight in a Massachusetts Democratic primary.
The result also raises a question about what Democrats are actually selecting for when they oust older incumbents elsewhere. If the replacement candidates are running to the left of the people they defeat, as Kiros did in Colorado, as Pearson positioned himself in Tennessee, then the generational turnover is not a move toward the center. It is a move toward the same positions Markey already holds, delivered by younger messengers.
Democrats who hoped the Green New Deal and its associated positions would become political liabilities will find little comfort in Tuesday's numbers. Markey co-sponsored the legislation, campaigned on it, and won by a margin that would embarrass most incumbents running unopposed.
The general election in Massachusetts is unlikely to present Markey with a serious challenge. But the platform he ran on, impeachment, defense cuts, abolishing ICE, government-run healthcare, and irreversible medical procedures for minors, will follow him and his party into the national debate. What wins a Democratic primary in Boston does not win a swing district in Wisconsin or Arizona.
Massachusetts Democrats told the country exactly who they are on Tuesday. The rest of the party will have to decide whether that is a model or a warning.
