On November 8, 2016, Oakland voters approved Measure LL with 83.19% (137,032 votes) in favor of the measure. Measure LL established: (1) A Police Commission to oversee OPD policies and procedures, and (2) The CPRA to investigate police misconduct and recommend discipline. On June 22, 2018, the Oakland City Council approved an ordinance to support and implement Measure LL. The first slate of Commissioners were seated in December 2017.
On November 3, 2020, Oakland voters approved Measure S1 with 81.27% in favor. Measure S1 expanded the independence, authority, and staffing of the Police Commission and CPRA, and provided that the OIG reports to the Police Commission.