The Ballot Brief
Worcester County, Massachusetts

Massachusetts House, 6th Worcester District

2 candidates are tracked for Massachusetts House, 6th Worcester District on the November 3, 2026 ballot: Jeanne Renaud Costello and John J. Marsi, Jr. Candidate information follows official Worcester County election filings; verify with the official election office linked below.

About this race

Jeanne Renaud Costello (Democratic), John J. Marsi, Jr (Republican) are on the November 3 ballot for Massachusetts House, 6th Worcester District; John J. Marsi, Jr is the sitting member, per the Massachusetts House of Representatives's official member directory (malegislature.gov). Nominees were chosen at the September 1, 2026 primary or, where only one candidate qualified for a party, print unopposed; Massachusetts elects this seat by plurality vote. Unenrolled and third-party candidates who qualify by nomination paper are not reflected in primary results and are not yet available from a certified source; check the Secretary of the Commonwealth's November list once published. This seat is elected by district; only the district covering your address appears on your ballot.

What this office does

State legislator. State legislators write and vote on state laws and the state budget, which fund schools, roads, prisons, universities and health programs, and set the rules for local governments and elections. Each member represents one district and serves on committees that shape bills before a floor vote. Terms are two years in most state houses and four in most state senates.

This race. Elected by district: only voters who live in the district see this race on their ballot. The sitting officeholder, John J. Marsi, Jr, is on the ballot.

Massachusetts › Worcester County › Massachusetts House, 6th Worcester District

Jeanne Renaud Costello

Democratic

Top priorities
  • Returning Southbridge schools from state receivership to local control
  • Special education funding and advocacy for developmentally disabled students

Per the Yahoo News Massachusetts voter guide.

Biography

Jeanne Renaud Costello is the Democratic nominee for Massachusetts House, 6th Worcester District on the November 3, 2026 ballot, per the Secretary of the Commonwealth's September 1, 2026 primary results. Works as a visual artist, special education advocate, and Intensive Flexible Family Support case coordinator, per Yahoo News Massachusetts voter guide. Is a lifelong Charlton resident and vice chair of the Dudley-Charlton Regional School Committee, per Yahoo News Massachusetts voter guide. No campaign website was found as of September 11, 2026.

John J. Marsi, Jr

John J. Marsi, Jr

Republican Incumbent

Top priorities
  • Supporting funding and equipment for first responders
  • Controlling taxes and securing local aid for families and small businesses
  • Reforming Chapter 70 education funding

Per the campaign site.

Biography

John J. Marsi, Jr is the Republican nominee for Massachusetts House, 6th Worcester District on the November 3, 2026 ballot, per the Secretary of the Commonwealth's September 1, 2026 primary results. John J. Marsi, Jr is a sitting member for the district, per the Massachusetts House of Representatives's official member directory (malegislature.gov). Is a business manager with more than 25 years of business management and community leadership experience, per candidate campaign site. Previously served on the Dudley Board of Selectmen before representing Charlton, Dudley, Southbridge, and Spencer, per candidate campaign site.

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Questions about this race

Who is running for Massachusetts House, 6th Worcester District in 2026?

2 candidates are tracked for Massachusetts House, 6th Worcester District on the November 3, 2026 ballot: Jeanne Renaud Costello and John J. Marsi, Jr. Candidate information follows official Worcester County election filings; verify with the official election office linked below.

When is the Massachusetts House, 6th Worcester District election in Massachusetts?

Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Massachusetts are on the Massachusetts election hub at theballotbrief.com.

How do I see my exact Worcester County ballot?

Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.

Verify this race

Candidate roster from official Worcester County and state election office filings, last verified September 29, 2026. Bios and priorities carry their attribution inline.

Cross-check with the official Massachusetts election office, or see the full Worcester County sample ballot and your exact ballot by address.

The rest of your Worcester County ballot

35 tracked races in Worcester County, Massachusetts. Landed here from another county's search? Look up your own ballot below.

Also on your ballot
Massachusetts House, 7th Worcester DistrictMassachusetts House, 8th Worcester DistrictMassachusetts House, 9th Worcester DistrictSee all 35 Worcester County races
Candidate profiles
Jeanne Renaud Costello, full profileJohn J. Marsi, Jr, full profileOfficial Massachusetts election office