The outcome of the state’s ballot initiative for a billionaires tax could set the tone for the broader Democratic debate about how to raise more revenue.

© Mike Kai Chen for The New York Times

Forget California’s billionaire wealth tax. The economist Natasha Sarin believes there are better ways to make billionaires pay up.

© The New York Times

The latest Silicon Valley billionaire club is a $333 million political ad machine that is heavily engaged in next week’s elections.

© Ben Jones

For more than a year, The New York Times followed recipients of universal basic income programs, which Elon Musk and other tech leaders have promoted as a solution to A.I.-fueled job losses.