- California Billionaires Tax Scores Enough Signatures For Ballot, Organizers Say Forbes
- California Billionaire Tax Has Signatures Needed for Ballot, Backers Say The New York Times
- California Billionaire Tax Appears Headed To The Ballot Barron’s
- California billionaire tax proposal garners enough signatures to head to ballot The Guardian
- Billionaire tax supporters submit signatures to place measure on California’s ballot NBC News
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