CNBC reviewed federal campaign finance reports for the 2026 cycle, starting Jan. 1, 2025 through the most recent filings, pulling together spouses and closely connected entities when it fit and stripping out duplicates or superseded entries. It's a current read on who is fueling the midterms, and it points to a sharp partisan split at the very top of the donor ranks.
To categorize donors, CNBC looked at which side received the bulk of each donor's money this cycle. Some gave to both parties. If a donor's giving mostly targeted bipartisan industry organizations, they were classified as special interest.
The scoreboard in CNBC's top 20 snapshot: Republican-aligned $830.5 million, Democratic-aligned $224.7 million, and special interest $142.1 million.
The top 20 together total nearly $1.2 billion, compared with roughly $9.8 billion amassed by Sept. 25 within the set of campaigns and super PACs CNBC examined.
On the Republican-aligned list, CNBC counted: Jeff and Janine Yass at $95.3 million; Andreessen Horowitz at $91.3 million; Elon Musk at $90.6 million; One Nation at $70.7 million; Richard and Elizabeth Uihlein at $70 million; Miriam Adelson at $67.6 million; Cameron and Tyler Winklevoss at $55.1 million; Paul Singer at $53.2 million; Greg and Anna Brockman at $50 million; American Action Network at $44.3 million; Foris Dax Inc. tied to Crypto.com at $38.6 million; American Prosperity Alliance at $36.3 million; Koch at $35 million; and Ken Griffin at $32.5 million.
CNBC reported that four tech and crypto donor groups - Andreessen Horowitz, Greg and Anna Brockman, the Winklevoss brothers, and Foris Dax/Crypto.com - have together steered roughly $93 million to MAGA Inc., the lead super PAC for President Donald Trump. MAGA Inc. started September sitting on $415.8 million in cash, having spent little of the $424.4 million it has brought in since Jan. 1, 2025. Two new Trump-aligned outfits launched in September - No Going Back PAC and Safety & Affordability PAC - have, according to AdImpact, secured about $140 million in ad placements and holds for House and Senate races.
Musk's contributions total about $90.6 million this cycle, with more than $50 million directed to his America PAC. Filings reviewed by CNBC indicate the PAC has, since then, logged nearly $27 million in independent spending spanning House and Senate contests in the 2026 general.
On the Democratic side of CNBC's top 20: George Soros at $102 million; Majority Forward at $61 million; and House Majority Forward at $61.7 million.
Special interest heavyweights include Coinbase at $57.7 million, Ripple at $49.6 million, and DraftKings at $34.8 million. Coinbase has funneled roughly $33.2 million to Fairshake, while Ripple has steered $48 million there as well, with both supporting the crypto super PAC that aids candidates in either party viewed as industry allies. Of its nearly $35 million in cycle outlays, DraftKings has channeled about $34 million to Win for America, the super PAC representing the sports-betting industry.
CNBC found seven of the top 20 donors are closely tied to crypto, AI or online betting, and together they've given about $377.1 million this cycle. Breakdown of that $377.1 million: Andreessen Horowitz $91.3 million, Coinbase $57.7 million, Cameron and Tyler Winklevoss $55.1 million, Greg and Anna Brockman $50 million, Ripple $49.6 million, Foris Dax/Crypto.com $38.6 million, and DraftKings $34.8 million.
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Between Labor Day and Sept. 25, conservative super PACs pushed substantially more cash than Democratic groups - $310 million versus $174 million, nearly a two-to-one clip - per CNBC's analysis. That surge comes as Republicans hustle to protect congressional majorities while more Senate and House seats once seen as safe have turned competitive.
Less than six weeks before voters head to the polls, the Cook Political Report with Amy Walter shifted 15 House contests toward Democrats and projected the GOP is on course to lose its House majority. The fight for the Senate is tighter but has edged toward Democrats too - Cook now labels overall control a genuine toss-up, noting Democrats need four seats.
Fundraising dynamics look different inside the Democratic ecosystem. CNBC found major Democratic funders are increasingly steering around the national party and, in some cases, opting to put money straight into candidate committees. Fundraisers told CNBC that the slowdown in big checks to the Democratic National Committee reflects lingering 2024 campaign frustration after Kamala Harris' defeat, anxiety over democratic socialism, and discontent with the DNC's leadership in Washington.
"We don't have the kind of donors they've got," said Matt Bennett of centrist Democratic think tank Third Way. Republican fundraiser Eric Levine of ERL Federal Consultants added, "No one ever agrees with anyone on 100% of the issues, but we are doing really well fundraising." After years at the DNC, Caroline Welles - now heading The First Ask - said Democrats "are starting to see this real opportunity in a bunch of these races."
The roster of GOP-leaning megadonors spans Wall Street, manufacturing, crypto, AI and online gambling, and they are channeling money into candidates, super PACs and policy-driven groups that want to shape how Washington sets the rules. "Populist sentiment against billionaires is at a fever pitch, but they have more money and more impact than ever before," said Saurav Ghosh of the Campaign Legal Center, warning that unrestricted spending can tip close races. Researcher Dustin Duong at Americans for Financial Reform put it bluntly: crypto aims to be a political kingmaker - spending big and making sure lawmakers notice - though much of it is going to candidates who were already strong.
For regular investors, the takeaway is not about picking sides, it is about understanding the policy risk backdrop. A wave of cash from crypto and AI interests - roughly $377.1 million from seven major donor groups in CNBC's top 20 - is colliding with real debates over market structure, AI oversight and sports-betting regulation. That kind of pressure can influence the rules companies operate under, which can ripple into sectors you own. Keep an eye on the policy fights that matter to the businesses in your portfolio.
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