Weird: they break down favorability for the top three candidates by race, but they don't give the breakdown for race in the actual first-choice vote (Table 3 and Table 6 on the PDF). Can anyone think of a reason to do that?
The favorability by race is among all California voters, not just GOP primary voters. The GOP primary presumably has too few minorities to get statistically meaningful racial crosstabs. I assume they're preparing to release their Democratic primary #s, as well as general election #s, and we'll get more info at that point.