Updated Oct 16, 2026, 2:28 PM ET
Jake Auchincloss
Democratic · 3 November 2026

Jake Auchincloss

U.S. Representative for Massachusetts's 4th congressional district (since 2021)

Jake Auchincloss, a Democrat and Marine Corps officer who has represented Massachusetts's 4th congressional district since 2021, is seeking re-election in 2026 against Republican Tom Stalcup, a physicist and entrepreneur.

2026 Races & Market Forecast

Live TruthIndex™ and prediction market consensus for races contested by Jake Auchincloss.

Latest coverage

Live News

Recent media coverage for Jake Auchincloss.

  1. U.S. Plans Reform for Biotech Clinical Trial Process

    Representative Jake Auchincloss (MA-04) unveiled plans to overhaul U.S. clinical trial regulation to speed biomedical innovation.

    wearethefrontier.org
  2. Auchincloss plans a bill to speed early-phase US trials

    Representative Jake Auchincloss (D-MA) plans to introduce a bill modeled on Australia’s faster early-phase clinical-trial regime. The proposal aims to speed U.S.

    theclarity.today
  3. Mass. lawmaker Auchincloss favors boosting U.S. biotech over targeting China

    Representative Jake Auchincloss (D-MA-04) advocates for boosting the U.S. biotech sector rather than pursuing protectionist or China-focused strategies.

    JBizNews
  4. On the Ballot: What to know for the Nov. 3 election in Newton

    Jake Auchincloss is the unopposed candidate on the general election ballot for Massachusetts’ 4th U.S. House District (MA-04).

    newtonbeacon.org
Born
January 29, 1988
Birthplace
Newton, Massachusetts
Education
Newton North High School
Harvard University (Bachelor of Arts in government and economics, 2010)
MIT Sloan School of Management (Master of Business Administration in finance, 2016)

Biography & Campaign Analysis

Background

Jake Auchincloss was born on January 29, 1988, in Newton, Massachusetts, to Laurie Glimcher and Hugh Auchincloss, both physician-scientists specializing in immunology. He was raised in Newton with his sister, Kalah, and attended Newton North High School.

Auchincloss studied government and economics at Harvard University, graduating in 2010 with a Bachelor of Arts with honors, and in 2016 he earned a Master of Business Administration in finance from the MIT Sloan School of Management.

Career

After Harvard, Auchincloss earned his commission in the U.S. Marine Corps through Officer Candidates School in Quantico, Virginia. He commanded infantry in Helmand Province in 2012 and a reconnaissance unit in Panama in 2014, and he was promoted to major on September 1, 2020.

Returning home, he worked on Charlie Baker's 2014 gubernatorial campaign and in 2015 won election to the Newton City Council by defeating the incumbent councilor; he was re-elected in 2017 and 2019 and chaired the council's transportation and public safety committee.

He also directed the MIT $100K Entrepreneurship Competition and worked at a cybersecurity startup and at Solaria Labs, the innovation arm of Liberty Mutual.

In 2020 Auchincloss ran for the open 4th district seat left by Joe Kennedy III, who ran for the Senate. He won the September 1, 2020, Democratic primary with 22.4% of the vote against eight other candidates, defeated Republican Julie Hall in November and took office on January 3, 2021. In September 2025 he ruled out challenging Senator Ed Markey, saying he would focus on serving as the inaugural chairman of Majority Democrats, a new group of Democratic elected officials.

2026 race

The 4th district covers much of southeastern Massachusetts, including Newton, Attleboro and Fall River, and Auchincloss was re-elected uncontested in 2024. In the 2026 Democratic primary he defeated AI researcher Jason Poulos, taking 66,952 votes, or 73.1%, to Poulos's 26.8%. His Republican opponent is Tom Stalcup, a physicist and entrepreneur who won his party's primary with 99.4% of the vote. The general election is on November 3, 2026.