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EXCERPT:
The two giant super PACs closely tied to Republican leaders in the House and Senate are relying on billionaire donors, the fossil fuel industry, cryptocurrency firms, and Big Tobacco to bankroll their defense of Congress.
Around half of the combined haul of the Senate Leadership Fund (SLF) and the Congressional Leadership Fund (CLF) has come from billionaires—at least $133.5 million—according to a Sludge analysis of Federal Election Commission data from the start of 2025 through March 2026. The billionaires include reclusive President Trump megadonor Timothy Mellon, casino mogul Steve Wynn, Republican megadonors Christopher and Jude Reyes, poultry magnate Ronald Cameron, and cryptocurrency tycoons the Winklevoss twins. It’s possible that more billionaires have donated to the SLF and CLF through their “dark money” affiliates, which hide the names of donors from the public.
The SLF and CLF were the top-spending outside groups nationwide in the 2022 midterms—though this time around, many more super PACs are loaded up with record amounts of cash to spend. The groups, aligned with Senate Majority Leader John Thune (S.D.) and House Speaker Mike Johnson (La.), spend heavily on attack ads against Democrats and independent expenditures supporting Republicans each cycle.