California · Proposition 40 · 2026

More than half of voters likely to oppose Prop 40 are in five Southern California counties

6,034,259 of the 11,087,883 voters likely to oppose Proposition 40 are in Los Angeles, Orange, San Diego, Riverside and San Bernardino counties. Californians vote on Proposition 40 on November 3, 2026.

California · Proposition 40, Billionaire Tax · Oppose Data week of September 21, 2026

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What you are looking at

One PharosGraph audience, PharosGraph CA Proposition 40 Billionaire Tax Oppose: 11,087,883 California voters likely to oppose the billionaire tax measure, in 25,540 neighborhoods across 58 counties. One dot per 2,000 voters. The map draws 11,087,866 of them; 17 sit in block groups with no boundary on file.

How it is built

Membership comes from the delivered audience file, one voter at a time. Who is in it is modeled from issue salience and how the measure is framed, and refreshed monthly. It is a modeled position, not local polling. Dots are placed at random within each voter's census block group, so they show where the audience is concentrated, not where anyone lives.

Where the Oppose audience is concentrated

PharosGraph scores 19.8 million California voters on where they are likely to stand on Proposition 40, the billionaire tax measure. The Oppose audience holds 11,087,883 of them, and they're in all 58 counties.

Los Angeles County carries the most, at 2,037,560, or 18.4 percent of the audience, less than its 25.4 percent share of all voters scored. Orange County follows with 1,298,413, or 11.7 percent.

San Diego, Riverside and San Bernardino complete the five. Together the five hold 54.4 percent of the audience, meaning a Southern California plan reaches more than half of these voters.

The voters on this map are a PharosGraph audience

PharosGraph scores every registered voter in the country, one voter at a time, on the issues in the news. Those scores are published through L2 Data as audiences that campaigns and agencies activate in LiveRamp or L2 DataMapping, the same way as any other third-party segment.

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On this map

PharosGraph CA Proposition 40 Billionaire Tax Oppose11,087,883 California voters

Related audiences to look for

The related measure

PharosGraph CA Proposition 43 Special Tax Vote Threshold Support California voters likely to support the two-thirds vote rule for special taxes.

PharosGraph CA Proposition 43 Special Tax Vote Threshold Oppose California voters likely to oppose the two-thirds vote rule for special taxes.

Voters focused on taxes

PharosGraph Taxes and Property Tax Relief Top 10 Percent Salience Voters in the top 10 percent nationally for focus on taxes and property tax relief.

PharosGraph Taxes and Property Tax Relief 10 to 20 Percent Salience The next band: voters between the top 10 and top 20 percent nationally.

PharosGraph Taxes and Property Tax Relief 20 to 40 Percent Salience The third band: voters between the top 20 and top 40 percent nationally.

The cost behind it

PharosGraph Cost of Living Driven by Property Taxes Voters whose cost of living concern is driven mainly by property taxes.

Where voters stand on taxes

PharosGraph Taxes Progressive Voters who hold a progressive position on taxes.

PharosGraph Taxes Leans Progressive Voters leaning progressive on taxes, whose position isn't fixed.

PharosGraph Taxes Centrist Voters who hold a centrist position on taxes.

PharosGraph Taxes Leans Conservative Voters leaning conservative on taxes, whose position isn't fixed.

PharosGraph Taxes Conservative Voters who hold a conservative position on taxes.