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R Republican · U.S. House 4, Massachusetts · Nov 3, 2026

Thomas
Stalcup

Republican physicist and tech entrepreneur challenging incumbent Jake Auchincloss in Massachusetts's 4th Congressional District in 2026

Researched checked 6 d ago
sources
12
positions
7
endorsements
0
tomstalcup.com ↗(opens in a new tab) X(opens in a new tab)Facebook(opens in a new tab)Instagram(opens in a new tab)
Opponent Jake Auchincloss D Compare race →

Background

Thomas "Tom" Stalcup is a Republican candidate challenging incumbent Representative Jake Auchincloss in Massachusetts's 4th Congressional District in the November 2026 general election. A resident of Brookline, Massachusetts, he holds a Ph.D. in Physics from Florida State University (2000) and conducted research at the National High Magnetic Field Laboratory studying complex materials. 13611

Since 2004, Stalcup has served as president of Upward Innovations Inc., an electronics company that designs and manufactures environmental-monitoring systems. His campaign biography also notes that he helped organize a team of whistleblowers who exposed government misconduct. 311

Stalcup previously served as an elected member of a school council in Brookline, though the sources reviewed do not specify the years of that service. His campaign is centered on science-based policy, with platforms addressing healthcare, environment, and education. 46

He is running against Democratic incumbent Jake Auchincloss, with reporting describing the race as Auchincloss facing multiple challengers including Stalcup on the Republican side. 616

At a glance

Party
Republican
Running for
U.S. House · District 4, Massachusetts
Election
Nov 3, 2026
Current office
President, Upward Innovations Inc.
Website
tomstalcup.com(opens in a new tab)

Where they stand

Each position links to the page it was drawn from. Quotes are verbatim.

Timeline

  1. Nov 3
    news
    Stalcup set to face Auchincloss in MA-4 general election

    Massachusetts voter guides and local coverage confirm Stalcup as the Republican challenger to incumbent Democrat Jake Auchincloss in the November 3, 2026 general election.

    Mass. general election 2026: Registration deadlines, schedule · Sep 25, 2026 (opens in a new tab)
  2. Oct 11
    poll
    Race tracker reports no public polls for Stalcup vs. Auchincloss matchup

    Scrutinel's race tracker, updated October 11, 2026, reported that no polls were available for the MA-4 general election contest between Stalcup and Auchincloss.

    Massachusetts 4th District · Scrutinel · Oct 11, 2026 (opens in a new tab)
  3. Sep 21
    news
    Stalcup listed as Republican challenger to Auchincloss in Fall River and New Bedford voter guides

    Local voter guides for Fall River and New Bedford identified Stalcup as the Republican candidate facing Democratic incumbent Jake Auchincloss in the MA-4 general election.

    Ballot q's, top races: Fall River voters' cheat sheet on MA 2026 election · Sep 21, 2026 (opens in a new tab)
  4. Sep 1
    filing
    Stalcup wins Republican primary unopposed in MA-4

    Stalcup advanced to the general election after winning the Republican primary without opposition, per Ballot Explained's race summary.

    Who's running in Massachusetts's 4th congressional district · Sep 13, 2026 (opens in a new tab)
  5. Aug 12
    filing
    Stalcup reports $26,242 raised and $1,319 cash on hand through August 12

    FEC filing data cited by KnowYourReps showed Stalcup had raised $26,242, spent $24,923, and held $1,319 cash on hand as of August 12, 2026.

    Massachusetts' 4th District Race 2026: Who's Running (MA-4) · Oct 3, 2026 (opens in a new tab)
  6. Apr 4
    news
    Stalcup launches campaign outside Biogen headquarters in Cambridge

    Thomas Stalcup's campaign website lists a launch event at 225 Binney St., outside Biogen's Cambridge headquarters, under the slogan 'Science over politics.'

Campaign finance

Totals filed with the Federal Election Commission for the 2026 election cycle.

Raised
$26K
Spent
$25K
Cash on hand
$1,319

As of Aug 12, 2026. Filings are periodic, so recent money may not be included yet. ↳ FEC record H6MA04140(opens in a new tab)

Sources 12

  1. [1] Massachusetts 4th District · Scrutinel(opens in a new tab) Oct 11, 2026
  2. [2] Massachusetts' 4th District Race 2026: Who's Running (MA-4)(opens in a new tab) Oct 3, 2026
  3. [3] Stalcup for congress – Science over politics(opens in a new tab) Oct 2, 2026
  4. [4] Mass. general election 2026: Registration deadlines, schedule(opens in a new tab) Sep 25, 2026
  5. [5] Ballot q's, top races: Fall River voters' cheat sheet on MA 2026 election(opens in a new tab) Sep 21, 2026
  6. [6] Who's running in Massachusetts's 4th congressional district(opens in a new tab) Sep 13, 2026
  7. [7] Economy – Stalcup for congress(opens in a new tab) Mar 30, 2026
  8. [8] Education – Stalcup for congress(opens in a new tab) Mar 30, 2026
  9. [9] Environment(opens in a new tab) Mar 30, 2026
  10. [10] Foreign Policy(opens in a new tab) Mar 30, 2026
  11. [11] Healthcare(opens in a new tab) Mar 30, 2026
  12. [12] Tax Reform(opens in a new tab) Mar 30, 2026
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