For the first time, a black woman is elected mayor of San Francisco

London Breed reached the milestone on Wednesday, when her opponent conceded a tight mayoral race. Breed will serve until 2020, finishing the term of the late Mayor Ed Lee, who died in December at age 65.  At a short news conference, Breed, 43, praised Lee and thanked her supporters, as well as the other candidates, including Mark Leno, a former state senator who conceded the race hours earlier. She struck an optimistic tone about the city’s future.

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