Massachusetts 6th — House 2026 Dem Primary
The Massachusetts 6th — House dem primary is scheduled for September 1, 2026. The model favors Daniel Koh at 74%, ahead of John Beccia at 12% in a 7-candidate field. Daniel Koh leads the field in reported fundraising and has the most tracked endorsements. Public polling is available for this race and feeds the forecast alongside fundraising, endorsements, and historical results.
Current win probabilities
- Daniel Koh — 74%
- John Beccia — 12%
- Tram Nguyen — 5%
- Beth Andres-Beck — 3%
- Jamie Belsito — 3%
- Mariah Lancaster — 2%
- Rachel Creemers — 2%
Probabilities update daily from polls, fundraising, endorsements, and historical results.