Zohran Mamdani, the Democratic candidate in New York City’s mayoral race, is shaking up US politics. The 34-year-old could make history on Tuesday by becoming the city’s first Muslim and South Asian mayor. His Socialist policies have electrified younger voters, while frightening conservatives and the old guard of the Democratic Party. Can a socialist stand up to US President Donald Trump and win? Our correspondents Jessica Le Masurier and Yves Schaeffner followed Mamdani on the campaign trail.