Proposition 40, known as the California billionaire tax, is polarizing, and to fight it two other propositions have been placed on the ballot.
Acton called the ad "a horrible and hideous thing to do."
Majorities see risks in AI and fewer see benefits.
Vance said in an interview that he hasn't spoken to Trump about running in 2028.
See what each proposition would do and who's behind the campaigns.
Half or more Americans call every household purchase measured "unaffordable."