The battle for the soul of the Democratic Party is on the ballot Tuesday, with at least a half-dozen primaries across the country testing which wing of the party has the most juice heading into the 2026 midterms. Why it matters: Progressive and moderate Democrats have been locked in a fierce debate over how to rebuild the party's brand since its candidates lost to Donald Trump for a second time in 2024. Progressives argue that Americans are hungry for a populist, tax-the-rich agenda, while mode