Bernie Sanders’s crushing victory in the Nevada caucuses today is much more than one giant leap toward the Democratic Party nomination.

Sanders is, of course, the favorite to win at the convention in Milwaukee. But a closer look at the numbers and demographics of the “Silver State” reveals something much bigger — the seeds of a new electorate rising up, and a fundamental realignment of US politics. And a new party, thoroughly working-class and committed to egalitarian politics, quickly blooming up into the husk of the old one.

While recent polls show Trump strengthening his grip on the Rust Belt, Sanders’s victory in Nevada points ahead to a new electoral map which might be the key not only to defeating Trump in November but toward rebuilding a working-class movement in America.