The mayoralty of Dianne Feinstein lasted from November 27, 1978, to January 8, 1988, while she served as the 38th Mayor of San Francisco. Feinstein gained the position following the Moscone–Milk assassinations, in which her predecessor, Mayor George Moscone, was killed by Dan White, a former member of the San Francisco Board of Supervisors. She was formally appointed to the position by the Board of Supervisors by a vote of six to two and inaugurated on December 4, 1978.