Mark Ruffalo Urges Californians to Vote Yes on Proposition 40

Mark Ruffalo is urging Californians to vote yes on Proposition 40, a proposed one-time 5% tax on billionaires who were California residents on January 1, 2026. In a social media post, he linked the measure to concerns about health coverage and clinic closures, and warned voters not to confuse it with Propositions 41 and 42. The competing measures could block Prop. 40 if either receives more yes votes. If approved and not voided, most tax revenue would fund health care.