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About this Poll
The USC Dornsife/Los Angeles Times poll was conducted Aug. 29-Sept. 8 among a random sample of 1,500 registered California voters, including 422 eligible to participate in the Republican primary, which is open only to registered Republicans, and 819 eligible to participate in the Democratic primary, which is open to registered Democrats and voters who decline to state a party. The margin of error for the Democratic subsample is +/- 3.6 percentage points. The margin of error for the Republican subsample is +/- 5.3 percentage points.