Socialist frontrunner Emmanuel Grégoire comfortably defeated veteran conservative Rachida Dati in a second-round runoff for Paris mayor, exit polls showed Sunday, in the last major test of the French… Socialist frontrunner Emmanuel Grégoire was elected Paris mayor on Sunday, beating right-wing former minister Rachida Dati and extending the left's quarter-century rule in the French capital, according to projections. Grégoire, a 48-year-old former d... [3232 chars]