From May 10th to May 15th, 2026, the Center for Strategic Politics conducted an English-language survey of 487 likely Democratic voters in Massachusetts’ 6th Congressional District using SMS to collect web responses. Respondents outside the sampled population were screened by self-identification and voter file match. The sample was weighted to be representative of likely Democratic primary voters by age, race, and gender. The margin of error is ±4.43%. This survey was commissioned by Beth Andres-Beck for Democracy.
Three and a half months from election day, almost 60% of likely Democratic voters in MA-6 are undecided. But when voters learn more by reading balanced biographies of the candidates, Beth Andres-Beck jumps into first place. New polling from the Center for Strategic Politics goes into depth on the race to replace Seth Moulton as well as how voters in the 6th district feel about other issues.
Key Takeaways
Head-to-head
When respondents are asked who they would vote for if the Democratic primary for MA-6 were held today, 59% are undecided. But after voters read balanced biographies (with positive and negative arguments) for the candidates, that number drops to 35% while Beth Andres-Beck and Jamie Belsito take the lead. Tram Nguyen, Mariah Lancaster, and Dan Koh follow closely behind while John Beccia remains in a distant 6th place.
Senate head-to-head
In the race for Senate, Seth Moulton is down 7 points against Ed Markey in his home district.
Issues
On Israel, MA-6 voters are generally aligned: 86% want to end, reduce, or condition military aid to Israel, with almost a majority (44%) wanting to fully end military aid.
On artificial intelligence, voters support stronger government regulation by a 90-point margin.
And on prosecution of ICE leaders and agents, voters are in favor by a 74-point margin.
Ballot measures
MA-6 Democratic voters are broadly in favor of the rent control ballot measure, with 63% in favor and only 20% opposed.
The full poll, including crosstabs, is available here.
The Center for Strategic Politics is where ideas shape the future of governance, analysis, and critical discourse.
For press inquiries, contact press@stratpolitics.org.
For all other questions, contact info@stratpolitics.org.