Dhaka, Nov. 7 -- The blistering rise of Zohran Mamdani to become mayor of New York City has offered encouragement to left-wing parties across Europe that an unabashedly radical agenda could help turn the tide against right-wing forces at home.

Parties from London to Berlin cheered Mamdani, a 34-year-old self-described democratic socialist whose viral videos and promise of rent controls and taxing the rich in a city seen as a beacon of global capitalism struck a chord with voters.

Parties like Germany's The Left party and Britain's Greens hope to garner momentum from Mamdani's win, signalling they would not dilute their policies or be sucked into the right-wing battleground of migration.

It could also give food for thought to established ...