Dianne Goldman Berman Feinstein, born Dianne Emiel Goldman (/ˈfaɪnstaɪn/; born June 22, 1933), is the senior United States Senator from California. A member of the Democratic Party, she has served in the Senate since 1992. She also served as 38th Mayor of San Francisco from 1978 to 1988.Born in San Francisco, Feinstein graduated from Stanford University in 1955 with a B.A. in history.