a16z slams down $115 million! The biggest donor for the US 2026 midterm elections is revealed

a16z and its two founders have donated over $115 million for the midterm elections, becoming the biggest financial backer of this cycle. Its political maneuvering has extended from crypto to AI, sparking internal divisions and external backlash, as Silicon Valley venture capital is doubling down on political investment with unprecedented intensity. (Previous context: a16z announces a new $10 billion fund targeting AI, crypto finance, and defense tech) (Background: Bloomberg: How did a16z become the key force behind US AI policy?) An investigation reveals that Silicon Valley venture capital giant Andreessen Horowitz (a16z), along with its founders Marc Andreessen and Ben Horowitz, has poured over $115 million in political donations into this US midterm election cycle, surpassing Musk and Soros to become the largest known backer to date. This is not merely a contest of money, but a radical experiment by Silicon Valley to reshape Washington's political ecosystem using venture capital logic. According to The New York Times, the largest donor in this US midterm election cycle is neither Elon Musk, George Soros, nor any other billionaire with the deepest political pockets. The true leader is a venture capital firm: Andreessen Horowitz (a16z). Top donor rankings for this midterm cycle, source: US Federal Election Commission, The New York Times According to The New York Times analysis, this Silicon Valley VC firm, along with founding partners Marc Andreessen and Ben Horowitz, has so far spent over $115 million in political donations on midterm-related activities, making it the largest known donor of this election cycle. This isn't a16z's first foray into politics — both founders are themselves veteran political donors with personal fortunes in the tens of billions. But this round's donation scale far exceeds the roughly $63 million from the 2024 election cycle. This top-tier investment firm is escalating its political bets with unprecedented intensity, attempting to steer policy directions to align with its own business interests. After the last election concluded, a16z established a posture of long-term political entrenchment. Conventionally, the day after a major election (with the next major election still two years away) is not the time for big-ticket donations. But on November 6, 2024, a16z made a one-time injection of over $23 million into the two core Super PACs of the crypto industry, sending a clear signal: its political playbook is a long-term strategy, not a passing trend. a16z declined to respond to media interview requests and did not arrange interviews with either founder. A few days later, on a post-election podcast, Andreessen stated bluntly: "My conclusion is that we must treat political engagement as a permanent mission." "Sometimes the tide is with you, sometimes you must fight for it. But whether favorable or adverse, we will remain deeply involved throughout." VC firms' massive political donations also reflect a major shift in the US political landscape. In this midterm cycle, the dominant donor force has shifted from individual billionaires to corporate institutions like a16z. Critics argue that massive institutional capital entering the arena may co-opt the electoral process purely to serve their commercial self-interests. Since the 2024 election, a16z has invested $47.5 million into the crypto industry's Super PAC network Fairshake. Its layout has long extended beyond the crypto lane: modeled on Fairshake, it spearheaded the creation of Leading the Future, a Super PAC focused on supporting AI-friendly lawmakers, and funded it with $50 million. Both Fairshake and Leading the Future adopt a bipartisan strategy, simultaneously funding Republican and Democratic candidates. In addition, a16z and its two founders collectively donated $12 million to Trump's Super PAC MAGA Inc., including a single $6 million contribution in March. That same month, a trust fund linked to Andreessen also donated nearly $900,000 to the Republican National Committee. This series of political investments has also enabled Marc Andreessen to build close ties with the Trump administration. A chart showing Andreessen and Horowitz's publicly disclosed political donations soaring this round: a16z and founders' political contributions surged from $2 million in 2022 to $115.5 million in 2026; funds primarily flowed to AI issues, the Republican camp, and the crypto industry. Source: US Federal Election Commission, The New York Times Before Trump began his second term last year, Andreessen revealed that he spent half his time at Mar-a-Lago, helping the Trump team complete the transition of power. This VC mogul also served as an informal advisor, providing strategic counsel for the Department of Government Efficiency spearheaded by Musk. Two former a16z partners have already joined the government as senior officials, one of whom oversees AI regulation-related affairs. In March of this year, the 54-year-old Andreessen was appointed to the White House's top technology advisory committee; recently he was also invited to attend the state banquet hosted for UK King Charles III's visit to America, as well as a private club dinner held by Trump in the White House Rose Garden. Regulatory filings show that the large donations from Andreessen and Horowitz mostly come from a16z, the firm they wholly own. The $115.5 million in this election cycle does not yet include the tens of millions the firm recently invested in the emerging AI nonprofit advocacy organization American Innovators Network, which is not required to publicly disclose donation details. Founded in 2009, a16z is one of Silicon Valley's most renowned investment firms. Drawing from the Hollywood talent agency model to incubate startups, it is aggressive in recruiting and adept at self-promotion, with early bets on crypto exchange Coinbase and social platform Instagram cementing its industry reputation. Both founders have politically storied backgrounds. In the 1990s, Andreessen gained fame as a young man through the early browser Mosaic and joined the ranks of the wealthy, becoming a core member of former US Vice President Gore's tech brain trust and a major fundraiser. Years later, his political stance gradually shifted rightward. He himself revealed that after Trump's 2016 victory, he deliberately stepped back from political fundraising activities and embarked on a journey of political "self-reflection," reassessing various ideological extremes. According to those familiar with his private social circles, Andreessen is now active in various private communities, often engaging in heated discussions on current affairs with conservative activists. The 59-year-old Horowitz's father is the well-known conservative provocateur David Horowitz. But insiders say Horowitz himself rarely makes public political statements and has relatively limited involvement in the firm's Super PAC affairs. While a16z publicly endorsed Trump in the summer of 2024, that same October, Horowitz, citing personal friendship, provided financial support to presidential candidate Harris. Andreessen and Horowitz publicly describe themselves as "single-issue voters": voting and donations are based solely on whether something benefits the development of tech startups. Sources say the two were ultimately resolved to engage deeply in politics due to years of clashes with the media and the Biden administration over tech policy. Andreessen has recounted to friends a past episode. About a decade ago, at the New Yorker's parent company Condé Nast headquarters, he had a dispute with the magazine's editor-in-chief David Remnick. The latter's team accused tech elites of being out of touch with the masses and disconnected from reality, but after Andreessen toured their lavish office and bathroom facilities, he came to believe it was the media elites who were truly out of touch. Before the 2024 election, veteran Silicon Valley political operative and Coinbase board member Chris Lehane spearheaded the formation of Fairshake. Andreessen and Horowitz believed the Biden administration's stance on the crypto industry — where a16z held heavy positions — was too hardline; combined with the fraud conviction of crypto's political figurehead SBF, the industry urgently needed a new political path. Thus a16z teamed up with crypto giants like Coinbase and Ripple to become Fairshake's core funders, with the firm donating $47 million to the organization in the 2024 election cycle. Although most pro-crypto policies in Washington today originate from Trump (Fairshake did not endorse Trump), this political gambit is still seen within the industry as a successful attempt. In spring 2025, Lehane — by then at OpenAI — once again took the lead, joining forces with a16z, tech donors, and political operatives to replicate the crypto industry's political fundraising strategy in the AI sector, with earlier positioning and larger investments. a16z, which has heavy holdings in countless AI projects, went all in: in August 2025 it donated $25 million to the AI political action committee Leading the Future, and added another $25 million in February 2026. Insiders reveal the firm has not yet decided whether to make further contributions. Compared to the hundreds of billions of dollars in assets managed by a16z, the $115.5 million in political investment is not particularly high. But other top Silicon Valley VCs, such as Sequoia Capital and Founders Fund, have not adopted similar large-scale political plays. According to The New York Times tally, since the 2024 election, the publicly disclosed federal donations second only to a16z come from Soros-linked entities (about $103 million) and Musk ($85 million). Major political involvement has also embroiled a16z in multiple controversies and backlashes. Internally, early firm partner John O'Farrell resigned from his part-time advisory role last May due to political differences. He publicly criticized the two PACs Fairshake and Leading the Future, as well as what he called "tech-circle figures actively ingratiating themselves with this administration, including many former VC peers and partners." He declined further comment. Externally, progressive camps have sharply attacked a16z. Last year, several lawmakers publicly criticized Arizona Senator Ruben Gallego for co-hosting a fundraising event with Andreessen. a16z's move to back the AI PAC Leading the Future has further triggered industry countermeasures. The opposing Super PAC Public First, which champions AI safety ideals, emerged with the founding mission of hedging against the political funding influence of a16z and its allies. Insiders even joke about calling the organization "z16a," deliberately inverting a16z's common shorthand. New York State Assemblyman Alex Bores is running for Congress with the endorsement of Public First. He stated bluntly that he does not fear attacks from Leading the Future: "VC logic is the pursuit of rapid scaling, but you shouldn't apply that logic to buying politics." Some Republicans are likewise unimpressed with a16z's political bets. They privately resent the bipartisan neutrality strategy of Fairshake and Leading the Future, believing that AI and crypto industry policies are inherently more Republican-friendly, and the relevant PACs should fully align with the Republican Party. Andreessen and Horowitz have told allies that they have limited decision-making power within the two PACs and rarely directly interface with the committee management. a16z's political strategy and Washington lobbying operations are coordinated by Collin McCune, a former congressional aide and Republican. He tracks the developments of the two PACs in real time and keeps Andreessen updated on the latest policy and political situation. But this doesn't mean Andreessen is unaware of political rules. In 2000, at just 29 years old, he asserted: "If you think political donations are big now, you haven't seen the real scale yet."