California’s Proposition 40 — the so‑called “billionaire tax” — looked like easy pickings for progressives: tax a few wealthy people, pay for health care, pat yourselves on the back. But recent polling has turned that bright idea into a messy reality show. The UC Berkeley Citrin Center–POLITICO numbers put support down in the mid‑40s, and furious ad spending plus two counterproposals have voters thinking twice. Spoiler alert: even if Prop 40 squeaks by at the ballot box, the fight is only getting started.
Polling shows support slipping — and money talks
The latest polls show Prop 40 losing the edge it once had. Voters who say they’ve heard a lot about the measure now tilt toward “no,” which means the opposition’s ad blitz and big donor checks are working. Two rival measures on the same ballot — Propositions 41 and 42 — were designed to blunt or block Prop 40 if they get more yes votes, and that technical trick has become a real campaign weapon. Add a flood of outside spending and undecided voters on edge, and the so‑called one‑time tax looks much less certain than its backers promised.
Why this shift matters for California budgets and voters
The Legislative Analyst’s Office says the tax could bring in “tens of billions” spread over several years, but it also warns the timing and amounts are shaky. Experts rightly point out that taxes like this are hard to value and to collect, and rich people and businesses can respond in ways that erode the revenue. Polling shows people are hearing those warnings enough to change minds. If you think “one‑time” taxes stay one‑time, history and plain math disagree.
Even if it passes, courts will almost certainly intervene
Here’s the part the hype machine skips: Prop 40 is a legal minefield. Constitutional claims about the Commerce Clause, apportionment of out‑of‑state assets, residency tests, and valuation methods are waiting in the wings. Hoover Institution and other legal analysts say multiple lawsuits are all but certain, and courts could delay, narrow, or block collections. The drafters included severability and a fast validation path because they know litigation is coming — they just hoped voters and donors would outpace the law. Spoiler two: the law moves slower than a campaign checkbook.
Voters should treat the whole package with healthy skepticism. A tax that targets “those other people” has a lovely sales pitch, but it brings big legal risk and uncertain dollars to a state that already mismanages money. If you want stable funding for health care, ask for clear plans, sound law, and proven revenue — not a ballot gimmick that promises a windfall and delivers a courtroom circus. In short: maybe don’t let politicians balance next year’s budget on a poll and a lawsuit.
