The millions spent by California billionaires against Prop. 40 is about 0.07% of their wealthPoliticsOct 23 at 6:00 AM – Oct 23 at 7:11 PM3 outletsBBC NewsAre California voters about to impose world's first 'tax on billionaires'? Oct 23 at 7:11 PMLos Angeles TimesThe millions spent by California billionaires against Prop. 40 is about 0.07% of their wealth Oct 23 at 6:00 AMNew York PostCalifornia voters’ major shift on billionaire tax revealed in new poll Oct 23 at 4:58 PM