- Supporters of billionaire tax submit signatures to place measure on California’s ballot NBC News
- California Billionaire Tax Has Signatures Needed for Ballot, Backers Say The New York Times
- California billionaire tax proposal garners enough signatures to head to ballot The Guardian
- California Billionaires Tax Scores Enough Signatures For Ballot, Organizers Say Forbes
- Why California couldn’t do a Mamdani-style pied-à-terre tax The San Francisco Standard