Massachusetts US Senate 2026
Election day is November 3, 2026. A statewide contest in Massachusetts.
Who is favoured in Massachusetts US Senate?
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What the Massachusetts US Senate election decides
The Senate confirms federal judges and cabinet officers, ratifies treaties, and can stop legislation the House passes. With a six-year term and a hundred-member chamber, a single seat is a larger share of the institution than any House district, which is why Senate races draw national money into state contests.
Each state sends two senators regardless of population, so this seat carries the same weight as California's or Wyoming's. Massachusetts voters fill it alongside all 9 of the state's House seats and the governorship, and a Senate term runs six years, spanning two future Congresses and, in this case, the next presidential election.
How Massachusetts votes
Massachusetts pairs a dominant education, healthcare and technology economy around Boston with old industrial cities and coastal communities. It is among the most Democratic states federally, while housing costs dominate its domestic politics. That backdrop is the ground any Massachusetts campaign fights on, and it is what the Electorate HQ simulation reads first when it weighs a ticket's platform against this contest.
About this race
The 2026 United States Senate election in Massachusetts was held on November 3, 2026, to elect a member of the United States Senate to represent the Commonwealth of Massachusetts. Democratic incumbent Ed Markey was re-elected to a third full term, defeating Republican attorney John Deaton.
Primary elections were held on September 1. Markey won the Democratic nomination over Representative Seth Moulton with 64.9% of the vote. Deaton, the Republican nominee in 2024, was nominated a second time after running unopposed in the primary.
Democratic primary
Latest coverage of the Massachusetts US Senate race
Massachusetts 2026 Election ResultsMassachusetts U.S. Senate Election 2026: Latest PollsMassachusetts 2026 U.S. Senate Race SummaryMassachusetts voter guide 2026: Candidates and key racesMassachusetts: And The Winner IsMassachusetts 2026 ballot questions, explainedThe rest of the Massachusetts ballot
Every Massachusetts House district, the counties inside each one, and an address lookup that resolves your exact districts are on the Massachusetts state page.
Other 2026 races in Massachusetts
Analysis covering Massachusetts
Twenty-six states elect a senator and a governor on the same day in 2026
The overlap between the Senate class and the gubernatorial cohort is a coincidence of two unrelated calendars, and it decides where money goes.
The 2026 Senate map covers 62% of the country and 70% of the states
Thirty-five of fifty states vote for Senate this year. Weighted by people rather than states the share drops, and that gap is the design of the chamber.