California · 2026 ballot measures
California · Proposition 40 · 2026

One in three voters likely to support Prop 40 is in Los Angeles County

2,998,877 of the 8,743,463 voters likely to support Proposition 40 are in Los Angeles County. Californians vote on Proposition 40 on November 3, 2026.

California · Proposition 40, Billionaire Tax · Support Data week of September 21, 2026
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What you are looking at

One PharosGraph audience, PharosGraph CA Proposition 40 Billionaire Tax Support: 8,743,463 California voters likely to support the billionaire tax measure, in 25,539 neighborhoods across 58 counties. One dot per 2,000 voters. The map draws 8,743,446 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 Support 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 Support audience holds 8,743,463 of them, and they're in all 58 counties.

Los Angeles County carries 34.3 percent of the audience, against 25.4 percent of all voters scored on the measure, meaning a campaign reaching these voters does a third of its work in a single county.

San Diego, Alameda, San Bernardino and Santa Clara come next. With Los Angeles, those five counties hold 55.5 percent of the audience, meaning most of it is in three media markets: Los Angeles, San Francisco-Oakland-San Jose and San Diego.

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 Support8,743,463 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.
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