“Hours after officials announced the sudden death of San Francisco Mayor Ed Lee, Board of Supervisors President London Breed made history on Tuesday when she became the city’s first black female mayor.

Breed, the city’s District 5 supervisor, is serving as acting mayor, though her board colleagues may elect someone to replace her at any time. She will likely carry on in the role until a citywide mayoral election is held on June 5.

The only other woman to serve as the city’s mayor was Sen. Dianne Feinstein (D-Calif.), who held the position from 1978 to 1988. Breed is also only the second black politician to take the job, following Mayor Willie Brown’s tenure from 1996 to 2004.

Like Feinstein did after Mayor George Moscone was assassinated, Breed is stepping into the role in the wake of an unexpected death that’s sent shockwaves around the city.”