He became the Republican candidate in the California gubernatorial election , 2018 after placing second in California 's nonpartisan blanket primary .
Cox ran unsuccessfully for the 2008 Republican nomination for President of the United States .
Cox became the Republican candidate in the California gubernatorial election , 2018 after placing second in California 's nonpartisan blanket primary .
Cox ran unsuccessfully for the 2008 Republican nomination for President of the United States .