California is a land of contrasts. The state is home to staggering wealth, world-remaking tech companies, and some of the world’s boldest climate policy. It also has immense income inequality, arguably the worst housing crisis in the country, and the highest poverty rate in the nation when you factor in housing costs. The dysfunction of our national politics is often attributed to division and gridlock. But in California, Democrats are at the wheel. No Republican has held statewide office in over a decade. And in many major cities — Los Angeles and San Francisco, for example — Republicans have little or no political power. For that reason, the tensions and difficulties facing the Golden State are often a signal of what is to come for the Democratic Party nationally. If California has long been a bellwether for national liberal politics, Senator Scott Wiener has been something of a bellwether for California politics. Senator Wiener has represented San Francisco in the California Senate since 2016 and, before that, served on the San Francisco Board of Supervisors. He was introducing bill after bill to address the state’s housing affordability crisis long before the term “YIMBY” was a widespread political label. And in recent years, he’s introduced legislation that would decriminalize certain psychedelics, provide access to therapy to all incarcerated Californians, and pilot supervised injection sites. So I wanted to talk to Senator Wiener about the political workings of his weird city and state — a place where traditional labels break down, where abundant resources meet equally abundant problems and where change is actually happening. This episode contains strong language. Mentioned: “Yes in Our Backyards” by Bill McKibben Book Recommendations: And the Band Played On by Randy Shilts The House on Mango Street by Sandra Cisneros Last Call by Elon Green Thoughts? Guest suggestions? Email us at [email protected]. You can find transcripts (posted midday) and more episodes of “The Ezra Klein Show” at nytimes.com/ezra-klein-podcast, and you can find Ezra on Twitter @ezraklein. Book recommendations from all our guests are listed at https://www.nytimes.com/article/ezra-klein-show-book-recs. This episode of “The Ezra Klein Show” is produced by Emefa Agawu. Fact-checking by Michelle Harris. Mixing by Jeff Geld. The show’s production team is Emefa Agawu, Annie Galvin, Jeff Geld, Rogé Karma and Kristin Lin. Original music by Isaac Jones. Audience strategy by Shannon Busta. The executive producer of New York Times Opinion Audio is Annie-Rose Strasser. Special thanks to Erik Mebust, Misha Chellam, Sonia Herrero and Kristina Samulewski.