CampaignReceipts
← All active races
KY-04 · May 19, 2026

Most expensive U.S. House primary in history

Incumbent Rep. Thomas Massie (R) faces Trump-endorsed challenger Ed Gallrein. Total race spend has crossed $35M -- super PACs poured $16.4M into ousting Massie while pro-Massie groups spent $10.1M. The previous record was the 2024 NY-16 primary at $25.2M; KY-04 broke it on May 11.

$35.0M
Total race spend
$26.5M
Super PAC IE
2
Candidates on file
Candidates · the receipts

Who's running. Who's funding them.

Each candidate's own campaign cash, the outside-money IE supporting them, and the IE attacking them — side-by-side.

Candidate · own campaign
Incumbent

Thomas Massie

Republicanendorsed: Massie campaign
$5.8M
Own campaign raised
+$10.1M
Outside money for
−$16.4M
Outside money against

Recent polling shows challenger ahead by 5-8 points. Massie voted against the March 2025 short-term funding bill; Trump posted that he should be primaried.

Candidate · own campaign

Ed Gallrein

Republicanendorsed: Donald J. Trump
$2.6M
Own campaign raised
+$16.4M
Outside money for

Trump-endorsed challenger. Outside money backing him includes MAGA KY ($5.6M), Republican Jewish Coalition ($4M), United Democracy Project ($2.6M).

Outside money · who's spending

The super PACs in this race.

01
MAGA KY
Trump-aligned · against Thomas Massie
$5.6M
02
Kentucky 4th PAC
Pro-Massie · for Thomas Massie
$4.6M
03
Republican Jewish Coalition
Pro-Israel · for Ed Gallrein
$4.0M
04
United Democracy Project
AIPAC-affiliated (FEC C00799031) · for Ed Gallrein
$2.6M
05
Kentucky First PAC
Pro-Massie · for Thomas Massie
$920K
RCPT-RACE-KY-04-2026-R-PRIMARY

KY-04

As of 2026-06-09
RaceMost expensive U.S. House primary in history
DistrictKY-04
Primary dateMay 19, 2026
Total race spend$35.0M
Total super PAC IE$26.5M
Candidates on file2
Pending

Incumbent Rep. Thomas Massie (R) faces Trump-endorsed challenger Ed Gallrein. Total race spend has crossed $35M -- super PACs poured $16.4M into ousting Massie while pro-Massie groups spent $10.1M. The previous record was the 2024 NY-16 primary at $25.2M; KY-04 broke it on May 11.

Cite as: RCPT-RACE-KY-04-2026-R-PRIMARYcampaignreceipts.com/race/ky-04-2026-r-primary
Share
What this page does and doesn't say
  • It does say: these figures come from FEC filings, candidate FEC summaries, and reputable reporting by named publications listed above. Every link is one click away.
  • It doesn't say: who will win. We surface money flows; we don't model elections. Polling, redistricting, organizing, candidate quality, and turnout all factor in ways the IE data cannot capture.
  • Updates: spending figures refresh as new FEC filings post. Refresh this page to pull the latest snapshot.
  • Free, always. Active race data stays free even after CR's Pro surfaces (Pro exports, alerts, deeper correlations) go live.
SEALED — The 2016 Promises cover
The audit before the $250M · CR's editorial founding document

The 145 promises he made before the $250M.

"Miriam gave my campaign indirectly and directly $250 million." — Donald J. Trump, White House Hanukkah reception, Dec 16, 2025. SEALED is the audit of every campaign promise Trump made BEFORE that money flowed. 145 promises, graded against primary-source receipts. 116pp PDF.

Read the case study — $15 PDF116pp · sealed2016.com