Top Democrats are fighting a billionaire tax in California. Their voters are on the other side |

The unprecedented measure has enormous potential nationwide. The clash exposes the party’s corporate-progressive divideMidway through this summer, a high-quality poll found that Democrats in California were overwhelmingly in favor of the upcoming ballot measure for a one-time 5% tax on billionaire wealth.The ratio was more than 4 to 1. But the state’s most powerful Democrats – including the governor Gavin…