Opposition from community health clinic associations and the California Medical Association centers on estimates that the 90% spending mandate on mission-related patient services would trigger roughly $1.7 billion in annual penalties, risking closures and reduced access for low-income Californians. The SEIU-UHW-backed measure emphasizes transparency requirements and penalties for non-compliance to redirect funds toward direct care, with the union having submitted over one million signatures to qualify it for the November 2026 ballot. A federal lawsuit filed by clinic groups seeks to block placement on the ballot, adding procedural uncertainty. This divide between union accountability goals and provider financial concerns has produced evenly balanced trader sentiment, with shifts likely from court rulings on the lawsuit, final qualification decisions, or evolving campaign spending patterns ahead of the election.