Zohran Mamdani has promised to transform New York City government when he becomes mayor. Can he do it? Mamdani, a 34-year-old democratic socialist, already faces intense scrutiny, even before taking office in one of the country's most scrutinized political jobs. Republicans have cast him as a liberal boogeyman. Some of his fellow Democrats have deemed him too far left. Progressives are closely watching for any signs of him shifting toward the center. On Jan. 1, he will assume control of America's biggest city under that harsh spotlight, with the country watching to see if he can pull off the big promises that vaulted him to office and handle the everyday duties of the job. All while skeptics call out his every stumble. For Mamdani, starting off strong is key, said George Arzt, a veteran Democratic political consultant in New York who worked for former Mayor Ed Koch. He's got to use the first 100 days of the administration to show people he can govern, he said. You've got to set a .