California’s 2026 ballot is no longer just a long list of initiatives: official top-contributor disclosures show a nine-figure fight around the billionaire tax and rival measures, with Bay Area tech money spread across multiple propositions.

The story matters in San Francisco because the statewide fight runs through local and Silicon Valley wealth: FPPC records, Mission Local reporting and San Francisco Examiner reporting tie major money to Google co-founder Sergey Brin, venture capitalist John Doerr, Ripple co-founder Chris Larsen and other Bay Area figures.

California voters were already facing an unusually crowded statewide ballot. GrowSF counted 14 propositions in its July state-measure overview (external source, opens in a new tab). Six weeks later, the clearer story is not ballot length. It is the early concentration of money around one tax fight and the measures that could blunt it.

The state Fair Political Practices Commission’s November 2026 top-contributor list (external source, opens in a new tab) reported, as of its Aug. 18 update, $31.4 million in top-contributor support for Prop. 40, $15.65 million in opposition, $63.27 million in support for Prop. 41, $64.27 million in support for Prop. 42 and $19.4 million in support for Prop. 45. The FPPC also cautions that some donors can be counted repeatedly when a committee is active on more than one measure. In plain English: these are top-contributor disclosures, not a precise spending ledger for each proposition.

The local hook is the donor geography. In an Aug. 17 Mission Local report (external source, opens in a new tab), Brandon Pho wrote that Building a Better California, the Sergey Brin-backed organization opposing Prop. 40 and supporting rival measures, received major new checks from John Doerr, Chris Larsen, John Hering and Neil Mehta. Pho also reported that the group moved millions into committees fighting over Prop. 40, Prop. 41 and Prop. 42.

The San Francisco Examiner put the scale in sharper relief. In an Aug. 6 Examiner story (external source, opens in a new tab), Troy Wolverton reported that committees on both sides of Props. 40, 41 and 42 had raised $140 million months before election day. The same story reported that San Francisco-based Ripple and Larsen each contributed $5 million to No on 40 efforts.

Prop. 40, sponsored by SEIU-United Healthcare Workers West, would place a one-time tax of up to 5% on nonproperty assets above $1 billion, with most of the money directed to health care. Props. 41 and 42 take a different route: they would alter state tax rules and, if they outperform Prop. 40, could keep it from taking effect, according to the Examiner.

The fundraising fight is expected to grow, according to people quoted by the Examiner. SEIU-UHW president Dave Regan said the union would keep raising money for Prop. 40, while Sarah Hill, a political-science professor at Cal State Fullerton, described the campaign as likely to remain expensive because billionaires have a direct financial stake.

That is the working shape of the November campaign: not one tax measure in isolation, but a multi-front contest where donors can fight Prop. 40 directly while also financing measures that could neutralize it even if voters approve it.