In a city where even startups go to die, Saikat Chakrabarti is trying to revive something far more difficult: the soul of the Democratic Party. The 39-year-old Indian-American political organiser, best known as the architect behind Alexandria Ocasio-Cortez’s stunning 2018 win, has now trained his sights on a political Goliath — Nancy Pelosi, the longest-serving member of Congress from California.