In a development that will stun absolutely no one, the California Democratic Party's roughly 380-member executive board gathered at a waterside Sheraton in San Diego this weekend and voted to endorse Proposition 40 - a "one-time" 5% levy on the net worth of the state's roughly 200 billionaires - clearing the 60% supermajority required for the party's official blessing, three months before voters render judgment on November 3.A large banner is seen at a campaign event for a proposed "billionaire tax" in Los Angeles on Feb. 18, 2026. | Jae C. Hong/APIf it passes - California residents on January 1, 2026 whose net worth is $1 billion or more on December 31, 2026, will owe Sacramento a nickel on every dollar. Directly held real estate is largely excluded - which means the drafters carved out the one asset class that cannot board a Gulfstream. The measure originated with a major healthcare union, the Service Employees International Union United Healthcare Workers West (SEIU-UHW), which claims it would raise $100 billion to offset what it calls deep healthcare funding cuts under the Trump administration. Progressive lawmakers, including Sen. Bernie Sanders and Rep. Ro Khanna, have cheered it on. SEIU says it will raise about $100 billion, mostly to backfill federal healthcare cuts, with some crumbs earmarked for education and food assistance.The arithmetic: $100 billion at a 5% rate assumes roughly $2 trillion in billionaire net worth sitting obediently in Atherton and Bel Air through year-end, marked to market and liquid enough to cut nine- and ten-figure checks to the Franchise Tax Board.“I strongly support the grassroots effort in California to impose a 5% wealth tax on 200 billionaires worth $2 trillion,” Sanders said of the tax. “This is a model that should be emulated around the country, which is why I will soon be introducing a national wealth tax on billionaires.”Yes: We need a wealth tax on billionaires. pic.twitter.com/2OUwSos5De