Massachusetts Holds Sept. 1 State Primary, With Markey and Moulton on the Democratic Senate Ballot

Four Names on One Ballot, and Only One With a Real Fight

Voters across Massachusetts started casting primary ballots Tuesday, Sept. 1, choosing party nominees for U.S. Senate, all nine U.S. House seats, governor and a long list of other statewide and legislative offices^[2][17]. Early in-person voting had already run from Aug. 22 to Aug. 28^[17]. The general election is Nov. 3^[1].

Almost all of the attention has gone to one race. Four Democrats are on the Senate primary ballot: two-term incumbent Ed Markey, 80; Rep. Seth Moulton, 47; and two lesser-known candidates, William Gates and Alexander Rikleen^[1]. On the Republican side, John Deaton is running unopposed and advances to November no matter what happens Tuesday^[17].

Here is the collision at the center of the story. Every recent public poll showed Markey ahead by roughly 27 to 28 points^[3]. And the race is still being described, all over national coverage, as a close and consequential fight over the future of the Democratic Party^[5][6][7][8]. Both things are true. They just describe different questions.

The Poll Numbers Everyone Agrees On, and What They Don't Settle

Start with the numbers themselves, because they are not in dispute. Emerson College's final survey, taken Aug. 28-29 among 550 likely Democratic primary voters, had Markey at 60% and Moulton at 33%, with 7% undecided^[3]. A separate UMass Amherst/WCVB poll taken Aug. 5-12 found almost the same thing: 60% to 32%^[3]. Both are far outside the polls' own margins of error.

That was not always the shape of the race. Back in May, Emerson had Markey up just 37% to 32%, with 29% of voters still undecided^[3]. Something moved a lot of undecided voters toward the incumbent over the summer. Markey's campaign points to that shift as proof voters chose experience once they weighed it. Moulton's campaign disputes that reading, though the specific evidence for a late break toward Markey is hard to argue with.

Primary polling carries a caveat general-election polling doesn't: turnout in a low-turnout primary is much harder to model, so these numbers deserve real weight but not certainty^[3]. Secretary of the Commonwealth William Galvin, who runs the state's elections, added a related caution a week before the vote — he said the Senate race itself was not what was driving early turnout^[12]. That matters for reading Tuesday night's numbers. A high turnout figure will not, by itself, tell you whether it was about Markey and Moulton at all.

Why "Thirty Years in the Senate" Cuts Two Opposite Ways

The real argument between the two campaigns is not really about Markey's age. It's about what seniority is worth.

In the Senate, committee rank and the ability to get a bill drafted, marked up and attached to a moving package are things that build up over years served^[7][8]. Markey's campaign treats that as the whole point of his candidacy: decades on the Commerce and Environment committees are not a resume line, they're leverage that a first-term senator simply doesn't have. He argues that leverage is also what makes him the more progressive choice on substance, pointing to his climate record and to Moulton's past opposition to Medicare for All^[9][7].

Moulton's campaign accepts that seniority is real currency. His argument is that the currency has stopped paying off — that Democrats have held long-tenured seats for years and still keep losing the larger national argument. He has called Markey "a good man" while arguing it's time for him to step aside, and he backs a constitutional amendment that would set an age limit for Congress — a rule aimed at the institution, not an attack on one senator^[5][6][9]. Unlike Markey, Moulton gave up his House seat to run for this one. If he loses Tuesday, he leaves Congress entirely in January^[9].

That asymmetry shapes how each campaign has run. Markey has appeared with national progressive figures — Sen. Elizabeth Warren, Sen. Bernie Sanders and Rep. Ayanna Pressley joined him at a rally in Boston's Dorchester neighborhood on Aug. 29, and Rep. Alexandria Ocasio-Cortez had separately endorsed him on Aug. 20, though she did not attend that rally^[14][20]. The Boston Globe's editorial board endorsed Moulton, along with several of his House colleagues and New Jersey Gov. Mikie Sherrill^[14]. Outside voices, in other words, turned a one-state primary into a stand-in for where the whole party is headed — which is a big part of why it's drawn so much coverage relative to its actual stakes.

The Race Underneath the Race Nobody's Watching

While the Senate contest dominates headlines, the primary that's actually contested on both ballots for governor is happening quietly on the Republican side. Gov. Maura Healey, a Democrat, has no primary opponent, and neither do the state's other statewide Democratic incumbents^[16][17]. The only open statewide primary fight belongs to three Republicans — Mike Kennealy, Michael Minogue and Brian Shortsleeve — competing for the right to face Healey in November^[16].

That contrast is its own small story. Massachusetts hasn't elected a Republican senator since a 2010 special election, and Markey won his own seat in 2020 with 66.2% of the vote^[13]. In a state that lopsided, the real electoral decision for the Senate happens in the Democratic primary, not the general election — which is exactly why turnout in a low-participation September vote carries outsized weight. Galvin's office projected roughly 800,000 Democratic votes and 280,000 Republican votes statewide, based on early and mail returns running ahead of 2022^[10][11]. He cautioned, though, that comparisons to 2022 are imprecise, since far more voters now vote early or by mail than did four years ago^[11].

What the Coverage Reveals About Who's Reading It

The way outlets have framed this primary splits fairly predictably along the usual lines, and the split itself is informative. Fox News and The Washington Times both lead with the "generational battle" framing and Markey's age, tying him to Warren and Ocasio-Cortez in ways aimed at an audience skeptical of both^[5][6]. CNN's framing goes the other direction, presenting Markey as the candidate pitching himself as the more revolutionary option, not the more cautious one — adopting the campaign's own preferred language in the process^[7].

The Boston Globe's newsroom, notably, reported its own Suffolk/Globe poll showing Markey up by double digits, even though the paper's editorial board had endorsed Moulton — a useful reminder that a newsroom and its opinion page are separate operations^[4][14]. The Associated Press's wire coverage, republished widely, comes closest to a neutral account: it uses the phrase "generational clash" but presents both candidates' arguments and notes similar age-driven contests playing out in other Massachusetts House districts^[9].

One absence stands out. A search for non-U.S. coverage of this primary turned up no substantial original reporting from major international outlets — only AP wire copy circulating through U.S. regional sites^[9]. A single-state Democratic primary in a reliably blue state simply doesn't register as foreign news, whatever its domestic profile.

What Tuesday Night Will and Won't Prove

By the time the polls close, the open questions won't be about vote totals so much as what those totals mean. A high turnout number could reflect enthusiasm about Markey versus Moulton — or it could reflect the broader shift toward early and mail voting that Galvin flagged before a single ballot was counted^[11][12]. Neither campaign has publicly disputed the polling that shows Markey well ahead, which is itself notable; the argument between them has moved to what that lead says about the party, not whether it's real.

Moulton's campaign has framed a loss, if it comes, as an early and necessary warning about generational change rather than a rejection of the argument itself^[6][8]. Markey's campaign, and the national progressives who joined him on the trail, have framed a wide margin as voters siding with experience over inexperience^[7][14]. Whichever Democrat wins moves on to face Deaton in a state where the general election has, in recent decades, been the formality and the primary has been the real fight^[13][17].