Tom Steyer — the billionaire hedge-fund manager turned political activist — has just been confirmed as the biggest self-funded candidate in American election history. According to advertising tracker AdImpact, Steyer has spent or booked more than $195 million on broadcast television, cable, and radio ads for the California governor’s race, with the tally still climbing.
A Record That’s Already Broken
To grasp the scale: Republican Meg Whitman held the previous record at $178.5 million across her entire 2010 California gubernatorial campaign — and she lost the general election to Jerry Brown. Steyer has now blown past that figure before California’s June primary has even concluded. AdImpact tracks ad bookings as well as money already aired, meaning Steyer’s final number will land well above $195 million by the time the votes are counted.
His ad spending is approximately twenty times what his nearest Democratic rival, former Health and Human Services Secretary Xavier Becerra, has booked. Former U.S. Representative Katie Porter, another Democrat in the primary field, is even further behind. Republicans in the race have spent a fraction of any of them.
How Steyer Built the Spend
Steyer made his fortune at Farallon Capital, the hedge fund he founded in 1986. He later turned to political activism, launching the climate-focused group NextGen America and spending heavily on his unsuccessful 2020 Democratic presidential bid. The California race represents his return to direct candidacy — and his largest single-race expenditure to date.
Most of the $195 million has gone into television. California is the most expensive media market in the country, and the geographic spread — Los Angeles, San Francisco, San Diego, Sacramento, Fresno — forces statewide candidates to buy time in multiple media markets simultaneously. Steyer’s campaign has been on air statewide for months.
The Backlash From Inside His Own Party
Katie Porter has been the most publicly outspoken critic, repeatedly hammering Steyer for what she frames as buying access through his personal wealth. Porter built her national profile by refusing corporate PAC money — a position she has used to draw a contrast against Steyer’s self-funding strategy. Her argument: a primary race dominated by one candidate’s checkbook is not a competitive primary at all.
Steyer’s team has defended the spending as standard campaign mechanics — pointing out that voters have a right to hear from candidates, that television is how Californians receive most political information, and that the spending is fully disclosed under state law. Federal campaign finance rules do not cap how much a candidate can spend out of personal funds, a position the Supreme Court has repeatedly upheld dating back to Buckley v. Valeo in 1976.
The Bigger Debate
Steyer’s spending lands in the middle of an ongoing national debate about money in elections that cuts across party lines. Polls have consistently shown that majorities of voters in both parties favor more aggressive limits on campaign spending — particularly self-funding by wealthy candidates. But the legal infrastructure has moved in the opposite direction since Citizens United in 2010 opened the door for unlimited outside spending. Self-funded candidacies, technically separate from outside spending, remain entirely unrestricted at the federal level.
What This Means for Americans
The California governor’s race is now the most expensive single state election in U.S. history. Whether Steyer wins or loses, the precedent is set — a billionaire can put nine figures into a single statewide primary and face no legal constraint at any level. Expect future races, in California and elsewhere, to follow the same playbook.
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