2026 Elections
The Massachusetts 2026 congressional primary was held on September 1, 2026. General Election Day is November 3, 2026.
Dates are approximate — states count the days differently and county schedules vary. Confirm yours at vote.gov. See all registration deadlines or early voting dates by state.
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See Massachusetts's current congressional delegation
Term end dates, party breakdown, and which seats are on the November ballot.
General Election · November 3, 2026
Quick Answer
Incumbent Sen. Ed Markey won the September 1 Democratic primary over Rep. Seth Moulton, 64.7%–35.0%. Markey had also won the May 30 Democratic state convention endorsement vote 72.9%–27.1%, which is a party endorsement and not the primary. John Deaton, the party’s 2024 nominee, was unopposed for the Republican nomination and so has no primary vote share.
November nominees
Ed Markey
Won primary · 64.7%
John Deaton
Each won their own party's primary and advance to November 3, 2026 in a single-winner plurality contest.
All U.S. House seats in Massachusetts are on the 2026 ballot. Every House member runs for re-election every two years. View Massachusetts representatives →
Massachusetts's Class II Senate seat is up for election in 2026. The current senator is Ed Markey (D). Class II senators were last elected in 2020 and serve six-year terms.
Massachusetts holds separate party primaries. Voters registered with a party vote in that party's primary. Voters registered as independent or unaffiliated may choose which party's primary to vote in. You may only vote in one party's primary.
| September 1, 2026 | Primary Election (passed) |
| October 2026 | Voter registration deadlines (check your state) |
| November 3, 2026 | General Election |
| January 3, 2027 | 120th Congress convenes |
Registered party members vote in their own party's primary. Voters registered as independent or unaffiliated may choose which party's primary to vote in.
To vote in the November 3, 2026 general election, register by ≈ October 24, 2026 — 10 days before Election Day.
Check your registration status and find your polling place at vote.gov. Deadlines marked ≈ are computed from statute and can shift — see all registration deadlines by state.
See All State Primary Dates
Compare Massachusetts's primary to other states' 2026 schedules.
John Deaton won the Republican nomination, and Ed Markey won the Democratic nomination with 64.7%. They advance to the general election on November 3, 2026.
The November 3, 2026 ballot features John Deaton (R) vs Ed Markey (D) for Massachusetts's U.S. Senate seat.
The Massachusetts 2026 congressional primary is September 1, 2026. The general election is November 3, 2026.
Registered party members vote in their own party's primary. Voters registered as independent or unaffiliated may choose which party's primary to vote in.
All U.S. House seats in Massachusetts are on the 2026 primary ballot. Additionally, the U.S. Senate seat (Class II) is up for election. The current senator is Ed Markey (D). Many states also hold primaries for governor and state legislature on the same day.
Massachusetts holds separate party primaries. Voters registered with a party vote in that party's primary. Voters registered as independent or unaffiliated may choose which party's primary to vote in. You may only vote in one party's primary.
Voter registration deadlines vary but are typically 15–30 days before the primary. Check the Massachusetts Secretary of State website or vote.gov for the exact deadline.
The 2026 general election is on Tuesday, November 3, 2026. This date is the same for all 50 states — it is always the first Tuesday after the first Monday in November in even-numbered years.
Full state-by-state calendar, primary types (open, closed, jungle), and what is on the ballot.
Key dates for the 2026 midterm elections, from primaries to Election Day.
Why only one-third of Senate seats are up for election every two years.
Everyone who represents Massachusetts in Congress, with term end dates.
