Gordon Brown

Muslim candidate is the favorite in London mayoral race despite being called 'radical' by rival

The son of a bus driver from Pakistan was favored to become London's first Muslim mayor as voters throughout Britain went to the polls Thursday.

Sadiq Khan, a human rights lawyer-turned-politician, often referenced his humble beginnings during his campaign, saying the city enabled his family to fulfill its potential and vowing to serve "all Londoners."

The 45-year-old Khan, nevertheless, faced what many described as racism and fear-mongering during the campaign. His main rival, the Conservative Party's Zach Goldsmith, used words like "radical" and "dangerous" when referring to Khan.

Khan's camp derided such tactics, saying they were intended...