The United Auto Workers (UAW) keeps rolling on.

On Monday, the union announced that a combined ten thousand nonunion workers at two dozen plants across the United States have signed UAW cards since the union began its campaign to organize a sizable portion of the country’s nonunion auto sector, especially thirteen automakers: BMW, Honda, Hyundai, Mazda, Mercedes-Benz, Nissan, Subaru, Toyota, Volkswagen (VW), and Volvo, and electric vehicle (EV) producers Lucid, Rivian, and Tesla. The UAW estimates that the total workforce it’s targeting is around 150,000 people, roughly the same number as are covered by the union’s contracts with the “Big Three” Detroit automakers.

So ten thousand cards means the union has a long way to go. But coming less than ninety days after UAW members ratified the Big Three contracts following their hard-fought stand-up strike, it’s an encouraging milestone. Call it evidence that the union wasn’t bluffing when it said it was channeling resources into an effort to reverse the union’s decades-long decline, along with that of much of the rest of the labor movement.