
MA-06 Democratic nominee?
Primary Election
Party selects its nominee.
Overview
Current roleVeterinarian (emergency/urgent care; small animal and wildlife)
PartyDemocratic
Political ideologyProgressive Democrat
GenderFemale
LocationMassachusetts
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BackgroundVeterinarian (emergency/urgent care; small animal and wildlife)
EducationUniversity of Massachusetts Amherst (graduate)
Notable personal detailsMariah Lorraine Lancaster is a Democratic candidate for the U.S. House in Massachusetts’s 6th Congressional District (2026). She is a veterinarian and has worked in federal policy roles including as a foreign affairs officer at the U.S. Department of State and as legislative staff in the U.S. House of Representatives. She graduated from the University of Massachusetts Amherst and earned a Doctor of Veterinary Medicine from Tufts University.
SourcesShowHide
Positions
Economy & Taxes
Mariah Lancaster supports raising taxes on high earners and wealthy households, including taxing capital gains like wages for high earners and imposing a surtax on extreme wealth. She also supports a stronger corporate tax floor, ending loopholes, expanding refundable tax credits, and fully funding IRS enforcement at the top.
Healthcare
Mariah Lancaster supports universal healthcare and single-payer Medicare for All. She also supports expanding Medicare benefits, lowering prescription drug prices, broadening access through Medicaid, CHIP, and ACA marketplaces, and treating healthcare as a right.
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Immigration & Border
Mariah Lancaster has called for abolishing ICE, signaling a strongly anti-enforcement approach on immigration and border policy. The campaign site and local reporting also frame Lancaster as opposing the Trump-era crackdown on immigrants and aligning with progressive priorities.
Abortion & Reproductive Rights
Mariah Lancaster supports enshrining reproductive freedom and says national access to birth control and abortion should be codified into law. They also describe abortion as healthcare and support legislation protecting reproductive health data and combating false advertising about abortion services.
Climate & Energy
Mariah Lancaster supports a clean energy transition centered on renewable energy, arguing that clean energy is cheaper than fossil fuels and that diverse renewable energy lowers costs while protecting the environment. The campaign frames this as a green economy that creates jobs and invests in national security.
Public Safety & Guns
Supports reinstating the federal assault weapons ban, banning high-capacity magazines, requiring a license to purchase a gun, and limiting purchases to one gun per month. Also supports repealing the PLCAA and Dickey Amendment, and backs non-carceral, health-centered public safety investments and removing military-grade weapons from police forces.
Polls

Aggregation source: FiftyPlusOne
Endorsements
Endorsers of Mariah Lancaster for MA-06 Democratic nominee?
Massachusetts Teachers Association
Labor organization
Massachusetts Teachers Association endorsed Mariah Lancaster in the MA-6 race
Fundraising
Latest report: Cycle 20262026
LatestCycle 2026
Source: FEC
New updates coming soon
We're monitoring and will update when new data impacts the race.
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