NEED TO KNOW

• Miriam Adelson wrote $40 million to two GOP super PACs in Q1 2026
• Senate Leadership Fund got $30 million — her largest single check ever
• Democratic House super PAC just posted a $69 million quarter

WASHINGTON, DC (TDR) — Miriam Adelson wrote a $40 million check to Republican super PACs in the first quarter of 2026, the largest single rescue package the GOP midterm machine has seen this cycle.

The big picture: One donor is now covering the gap between Republican ambition and Republican fundraising on a map where the math is tightening by the week.

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• Adelson sent $30 million to the Senate Leadership Fund and $10 million to the Congressional Leadership Fund
• The Senate check is her largest single contribution ever to that group

Why it matters: The 2026 Senate map forces Republicans to defend vulnerable seats in Ohio, North Carolina, Maine, Iowa and Alaska — and the party out of the White House historically gains in midterms.

• SLF just committed $342 million across eight states, $45 million alone for Michigan
• Without whale donors like Adelson, that ad reservation doesn't get funded

Driving the news: The Federal Election Commission filing Wednesday documented the transfer in plain numbers, and it arrived at a moment when Democratic outside groups are posting record quarters of their own.

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• The two GOP super PACs raised over $110 million combined in Q1
• Senate Leadership Fund alone booked $72 million of that
• House Majority PAC raised $69 million — nearly double its 2024 pace
• Adelson and her late husband Sheldon gave roughly $90 million to pro-Trump PACs in 2020

What they're saying: The political spin and the structural read split cleanly along party lines.

• Mike Smith, House Majority PAC President — called Q1 the group's "strongest start to an election year"
• Republicans in competitive Senate races are already being out-raised by Democratic challengers in key primaries
• Michigan Democrat Mallory McMorrow posted $3 million; Abdul El-Sayed brought in $2.25 million

Yes, but: Democrats do not hold the high ground on megadonor cash. MAGA Inc. sits on $304 million, and the Democratic party committees carry their own billionaire class.

• The DNC entered 2026 carrying more than $17 million in debt
• Soros, Pritzker and Hoffman networks remain active Democratic bundlers

Between the lines: Adelson's priorities are not hypothetical — she publishes an Israeli newspaper, funds pro-Israel advocacy worldwide, and is writing these checks during an active U.S.-Israel-Iran conflict where Congress will shape supplemental aid, sanctions enforcement and war powers votes.

• No coverage of the donation by Bloomberg, CNN or the wires connects the timing to Operation Epic Fury or the pending Iran policy votes
• The Senate she is funding will write the checks that arm the country she most publicly supports

What's next:

• Senate Leadership Fund begins summer ad reservations in Michigan, Georgia and New Hampshire
• Q2 FEC filings due July 15 will reveal whether Adelson's check triggers a donor cascade
• House and Senate Iran-related votes expected before August recess

Should a single foreign-policy-motivated donor be funding both sides of a congressional vote on a war she has a stake in?

Sources

This report was compiled using information from Bloomberg, CNN, The Hill, NBC News, Newsmax, and filings with the Federal Election Commission.

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