California has recently changed the way candidates are nominated in its primaries. The reform was designed in part to encourage cross-party collaboration and moderate the state's policy agenda. In this paper, I look specifically at the impact of the reform on business regulation issues, as measured by the legislative scorecards of the California Chamber of Commerce. I find that Democrats, but not Republicans, have indeed tended to be more moderate on these issues both recently and under similar reform conditions over a decade ago. But it is difficult to find firm evidence that would credit the reform for these changes. Moreover the Chamber's policy agenda as a whole is not clearly more successful under such periods of reform. Instead, this business agenda-and by extension, the willingness of Democrats to support it-seems tied solidly to unified or divided partisan control of government.