Yes on 40

Yes on 40 Updates

Campaign news, endorsements and source-linked updates on California Proposition 40. The dated links below include the current archive and more recent releases that otherwise require infinite scrolling.

Prop 40 facts and sources · Read the initiative

Original reporting and public letters cited by recent updates

Campaign updates: August–September 2026

Stay up to date with the latest news on Prop 40, a statewide ballot measure to make billionaires pay their fair share with a one-time, emergency 5% tax to prevent hospital and clinic closures across California. This page features campaign news, updates, and endorsements from the Yes on 40 campaign.

More recent updates

  1. — Otro Sindicato de Trabajadores de la Salud Respalda La Propuesta 40, El Impuesto a Los Billonarios de California
  2. — Another Healthcare Union Backs Prop 40, The California Billionaire Tax
  3. — Momentum Grows For Billionaire Tax As California State Parent Teacher Association Endorses Prop 40
  4. — La Representante Federal Judy Chu Respalda La Proposición 40, El Impuesto A Los Billonarios
  5. — U.S. Representative Judy Chu Endorses Prop 40 Billionaire Tax
  6. — Trabajadores Y Empleadores En Ee. Uu. Enfrentan El Mayor Aumento En El Costo Del Seguro Médico En Décadas, Renovando El Llamado A Votar Sí A La Propuesta 40 En Noviembre
  7. — U.S. workers, employers face biggest health insurance price hike in decades, renewing calls for voters to pass Prop 40 in November
  8. — Nueva Campaña Publicitaria De Billonarios Repite Mentiras Ya Desmentidas Y Utiliza Tácticas De Miedo Contra La Propuesta 40
  9. — Billionaire Advertising Pushes Already Debunked Lies, Scare Tactics About Prop 40
  10. — News Flash: Billionaire Brin isn’t fleeing California — he’s working at Google HQ right here in Mountain View, California
  11. — El Partido Verde de California respalda la Propuesta 40, el Impuesto a los Billonarios de California
  12. — California Green Party backs Prop 40, The California Billionaire Tax
  13. — REP. RO KHANNA, CALIFORNIA UNIONS UNITE ON STAGE IN SAN JOSE FOR RALLY IN SUPPORT OF POPULAR PROP 40
  14. — Atención a esto: Veteranos militares alertan sobre la crisis hospitalaria en California en un nuevo anuncio a favor de la Propuesta 40
  15. — WATCH: Military veterans sound alarm over California hospital crisis in new Prop 40 Billionaire Tax ad
  16. — Third major win in three days for billionaire tax advocates as labor movement firmly unites behind Billionaire Tax: AFL-CIO California Federation of Labor Unions overwhelmingly backs California Billionaire Tax (Prop 40)
  17. — La Supervisora Del Condado De Alameda, Nikki Fortunato Bas, Respalda El Impuesto a Los Billonarios
  18. — Alameda County Supervisor Nikki Fortunato Bas Endorses Billionaire Tax
  19. — Momentum grows for Billionaire Tax as California Nurses Association endorses Prop 40
  20. — El Impuesto a los Billonarios recibe el respaldo del voto a favor (“YES”) del Partido Demócrata de California
  21. — Major victory for Billionaire Tax (Prop 40) backers: Billionaire Tax wins “YES” vote endorsement from California Democratic Party
  22. — CALIFORNIA YOUNG DEMOCRATS BACK PROP 40, THE CALIFORNIA BILLIONAIRE TAX