Voters in California participate in the gubernatorial primary on Tuesday using an open-primary system that advances the top two candidates regardless of party. Early ballot data show registered Republicans at 21% turnout versus 18% for Democrats, while the Emerson College poll lists Xavier Becerra at 28%, Tom Steyer at 22%, Steve Hilton at 21%, and Chad Bianco at 12%. High-profile Democrats including Kamala Harris and Katie Porter declined to run.