Zohran Mamdani’s lead heading into the New York mayoral election has withstood a furious push from Republicans, establishment Democrats and a coalition of Wall Street dealmakers, leaving Democrats to face a familiar question should he win on Tuesday. 
If Mamdani can make it there, can he — or a candidate like him — make it anywhere?
Aspects of Mamdani’s campaign that some thought would doom his candidacy — his vociferous criticism of Israel’s actions in Gaza, his past calls to defund the police and his refusal to flee from the political label of socialist — haven’t turned off a plurality of New York voters, ...