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R Republican · U.S. House At-large, Delaware · Nov 3, 2026

Joseph
"Dr. Joe" Arminio

Republican nominee Joseph "Dr. Joe" Arminio challenges Rep. Sarah McBride for Delaware's at-large U.S. House seat in 2026

Researched checked 6 d ago
sources
9
positions
12
endorsements
0
drjoeforcongress.com ↗(opens in a new tab)
Opponents Sarah McBride D+ 1 more Compare race →

Background

Joseph "Dr. Joe" Arminio is a Republican candidate for Delaware's at-large U.S. House seat in the November 3, 2026 general election. He won the Republican primary on September 15, 2026, and is challenging Democratic incumbent Representative Sarah McBride. 315

Arminio was born and raised in Wilmington, Delaware. His campaign biography states he holds a B.A. in political science from Johns Hopkins University and a Ph.D. in political science from MIT, with an emphasis on international relations and national defense policy. He also audited the master's War Studies program at King's College London on a Delaware Rotary scholarship. 8

According to his campaign biography, Arminio interned in Senator William V. Roth's Washington office, briefly worked for Northrop Grumman, and managed Defense Department accounts for Sprint Government Systems Division. He also did contract work for the Department of Defense, the American Enterprise Institute, and High Frontier; chaired the National Coalition for Defense from 1996 to 2000; published The Citizens' Monitor from 2004 to 2007; and taught at American University and Lincoln University. He has authored seven books, per his campaign's account. 8

Arminio has no prior elected office. He ran unsuccessfully in the 2008 Republican primary for Maryland's 1st Congressional District. 85

At a glance

Party
Republican
Running for
U.S. House · District At-large, Delaware
Election
Nov 3, 2026
Website
drjoeforcongress.com(opens in a new tab)

Where they stand

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

Timeline

  1. Sep 28
    debate
    University of Delaware cancels debates; Arminio campaign criticizes decision

    The University of Delaware's Center for Political Communication announced it was canceling its regular debates for state and federal offices, citing cost and a shift toward research-focused mission. Arminio's campaign criticized the cancellation and he announced plans for public rallies around the state.

    University of Delaware cancels political debates, prompting pushback · Sep 28, 2026 (opens in a new tab)
  2. Sep 24
    filing
    Earl Cooper files as write-in candidate for Delaware's at-large House seat

    Earl Cooper, who had been the Delaware Republican Party's endorsed candidate in the primary, subsequently filed as a declared write-in candidate for the House race following the forum controversy.

    Delaware election 2026: What to know about the U.S. Senate race between Chris Coons and Mike Katz - WHYY · Oct 10, 2026 (opens in a new tab)
  3. Sep 15
    news
    Arminio wins Republican primary for Delaware's at-large U.S. House seat

    Arminio defeated John J. Whalen III and Earl Cooper (the party-endorsed candidate), winning approximately 48% of the vote (18,629 votes). He advances to face Democratic Rep. Sarah McBride in the November 3 general election.

    Joe Arminio wins Republican U.S. House Primary, goes on to challenge Rep. McBride · Sep 15, 2026 (opens in a new tab)

Campaign finance

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

Raised
$6,634
Spent
$4,453
Cash on hand
$2,181

As of Aug 26, 2026. Filings are periodic, so recent money may not be included yet. ↳ FEC record H6DE01121(opens in a new tab)

Sources 9

  1. [1] Delaware election 2026: What to know about the U.S. Senate race between Chris Coons and Mike Katz - WHYY(opens in a new tab) Oct 10, 2026
  2. [2] Joseph "Dr. Joe" Arminio(opens in a new tab) Oct 9, 2026
  3. [3] Issues(opens in a new tab) Oct 5, 2026
  4. [4] University of Delaware cancels political debates, prompting pushback(opens in a new tab) Sep 28, 2026
  5. [5] Joseph Arminio — 2026 Delaware's At-Large Congressional ...(opens in a new tab) Sep 19, 2026
  6. [6] Arminio scores surprising win in GOP primary for U.S. House(opens in a new tab) Sep 16, 2026
  7. [7] Joe Arminio wins Republican U.S. House Primary, goes on to challenge Rep. McBride(opens in a new tab) Sep 15, 2026
  8. [8] Republicans select nominee to face trans member of Congress in ...(opens in a new tab) Sep 15, 2026
  9. [9] Joseph "Dr. Joe" Arminio(opens in a new tab) Sep 10, 2026
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