State Controller John Chiang named attorney Gavin Wasserman to the Fair Political Practices Commission on Friday.
Wasserman, who runs his own firm in Southern California, replaces termed-out Commissioner Ronald Rotunda on the political ethics agency's panel, which enforces the state campaign laws.
The Torrance Republican was selected from a list of candidates recommended by the California Republican Party, an arrangement required by law because Chiang and two other officials naming appointees are all Democrats.
Wasserman fills one of three commission spots that open up this month. The other two appointees will be chosen by Attorney General Kamala Harris and Secretary of State Debra Bowen.