CNBC | US Top News and Analysis Follow California's Proposition 40: What voters need to know about the billionaire wealth tax California's billionaire wealth tax, Proposition 40, looks like a close call based on recent polls. Here is what to know before Election Day on Nov. 3. https://www.cnbc.com/2026/10/22/california-proposition-40-billionaire-tax-wealth.html cnbc.com
