Charles Manson disciple Leslie Van Houten was granted parole by a California parole panel on Wednesday.
Gov. Jerry Brown now has a 120-day period to affirm, reverse or take no action on the decision.
Last year, a similar panel at the California Institution for Women in Chino, where Van Houten is incarcerated, granted her parole but it was overruled by the governor.
The 63-year-old was just 19 when she killed for Manson in 1969. Van Houten helped several other members of the "Manson Family" kill Los Angeles grocer Leno La Bianca and his wife, Rosemary.
Over the course of two nights, Manson and his band of followers killed seven people, including pregnant actress Sharon Tate. Van Houten, however, was not involved in Tate's death.
Van Houten has been a model prisoner and has earned college degrees since she was incarcerated more than 40 years ago.
Members of the Tate and La Bianca families have publicly opposed granting her, and other Manson disciples, parole.
The Associated Press contributed to this report.