California Voters Will Decide Proposition 43 in 2026

The measure would raise the approval threshold for citizen-led tax initiatives to a two-thirds majority.

Updated on Sept. 29, 2026 in Civic Engagement

Bold flat-color editorial illustration of a metal ballot box on a stone pedestal, representing the weight of state tax initiatives. — California voters will decide the fate of Proposition 43 in November 2026, a measure to raise the tax initiative approval threshold to two-thirds. AI Illustration. Upload story photo >

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Should citizen tax initiatives require a two-thirds majority to pass?

In November 2026, California voters will determine the fate of Proposition 43, a measure seeking to alter how citizen-led tax initiatives are approved. If passed, the initiative would increase the required voter approval threshold from a simple majority to a two-thirds majority.

Why it matters

Proponents argue that this change closes a loophole created by a 2017 California Supreme Court ruling, while critics contend it allows a small minority to block the will of the majority. The outcome could significantly impact the viability of future local tax proposals across the state.

Proposition 43 seeks to mandate a two-thirds supermajority for citizen-led tax initiatives. This follows historical precedents including state constitutional amendments regarding special taxes passed by voters in 1978 and 1996.

The players

California Supreme Court

This is the highest judicial body in the state of California and holds the authority to interpret the state constitution.

VTA

The Santa Clara Valley Transportation Authority provides public transit services and is a key stakeholder in regional tax proposals.

The details

The proposal aims to shift the approval process for citizen-led sales tax initiatives, which currently qualify for the ballot through signature gathering. Recent local measures illustrate the stakes, such as Measure A, which passed in November 2025 with 57% of the vote to generate $330 million annually for healthcare.

1978: Voters amended the state constitution regarding special taxes.
1996: Voters reaffirmed constitutional two-thirds vote requirements.
2017: The California Supreme Court ruled on simple majority tax thresholds.
November 2025: Measure A was approved by county voters.
November 2026: Voters will decide on Proposition 43.

Political Context

Proposition 43 marks a direct legislative challenge to the framework established by the 2017 California Supreme Court ruling on simple majority tax thresholds. Critics argue the measure effectively grants a super minority the power to veto future local funding efforts.

If the measure passes, voters will face a significantly higher bar for approving local sales tax increases, which could stall regional transit or healthcare funding efforts. Citizens may find that future public service initiatives require broader consensus than the current simple majority allows.

The takeaway

Proposition 43 represents a fundamental debate over the threshold required for direct democracy in California tax policy. Voters should prepare for significant changes to how local infrastructure and community projects are funded in the coming decade.