Mark Stewart Greenstein
Democratic candidate for U.S. House in Connecticut
CT-01 Democratic nominee?
$53.5K
AUG 18, 2026Primary Election
Party selects its nominee.
Live Odds — CT-01 Democratic nominee?
Current prediction-market probability for the candidate, updated as market prices change.
0%chance to win
$53.5KAUG 18, 2026Candidate Overview
Key details about the candidate’s background, party, office sought and current campaign.
Current roleBusinessman
PartyDemocratic
Political ideologyOther
LocationConnecticut
BackgroundBusinessman
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EducationBA, Dartmouth College (1986)
Notable personal detailsMark Stewart Greenstein is a Democratic candidate for the U.S. House in Connecticut’s 1st Congressional District in the 2026 election cycle. He has described his professional background as a businessman and educator, including founding Ivy Bound test prep/tutoring. He has also described prior work as a lawyer and has been publicly listed as holding a B.A. from Dartmouth College and a J.D. from the University of California, Berkeley.
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Political Positions
Economy & Taxes
The candidate advocates eliminating the personal income tax, reducing regulations on business, and shrinking government intervention in the economy. The campaign platform calls for repealing many laws, ending the income tax, and promoting private-sector solutions to replace state funding. These positions indicate strong support for major tax reductions and limited government economic policy.
Healthcare
Advocates abolishing taxpayer-funded healthcare and defunding Medicaid and Medicare, making government programs optional. Calls for making the Affordable Care Act (Obamacare) and Medicare voluntary and emphasizes private choice and market-based payment for care.
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Immigration & Border
The candidate advocates strong border enforcement, including temporarily stopping immigration and restricting benefits for newcomers, and supports treating unauthorized entrants as threats. He endorses aggressive enforcement measures and stricter immigration controls.
Abortion & Reproductive Rights
The candidate opposes a federal right to abortion and opposes federal funding for Planned Parenthood, describes abortion as immoral, and says decisions about abortion should be left to states or localities rather than the federal government. He has directed readers to a campaign video titled "Higher Law" for more on his view.
Climate & Energy
The candidate opposes federal environmental mandates and supports expanding fossil fuel production (drilling and pipelines) while favoring elimination of the Department of Energy. He also opposes electric-vehicle mandates and expresses constitutional objections to broad federal environmental regulation.
Public Safety & Guns
The candidate opposes bans on so-called "military-style" firearms and argues against firearm restrictions, advocating that civilians with permits and private gun ownership help deter violence and protect communities.
Latest News
Mark Stewart Greenstein is in the news because he is a candidate in Connecticut’s 1st Congressional District, where the Democratic primary has drawn multiple contenders and is now part of the broader election picture. Recent coverage around the Connecticut primaries has focused more on turnout and other races than on Greenstein specifically, so the reporting on his campaign is limited. The available summaries do not show a major new development directly involving him.
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