Question:

Poll Demographics

About this Poll

Findings in this report are based on a telephone survey of 2,502 California adult residents, including 2,252 interviewed on landline telephones and 250 interviewed on cell phones. Interviews took place on weekday nights and weekend days from July 6–20, 2010 and took an average of 18 minutes to complete.

The sampling error for the total of 2,502 adults is ±2 percent at the 95 percent confidence level. This means that 95 times out of 100, the results will be within 2 percentage points of what they would be if all adults in California were interviewed. The sampling error for subgroups is larger: For the 1,971 registered voters, it is ±2.2 percent; for the 1,321 likely voters, it is ±2.7 percent; and for half-samples on questions 36–39 (1,233 adults) and 36a–39a (1,269 adults), it is ±2.8 percent. When the design effect from weighting is taken into consideration, the overall sample has a margin of error of ±2.7 percent; for registered voters, it is ±3%, for likely voters, it is ±3.7%, and for the half-samples on the 36–39 and 36a–39a series, it is ±3.8%. Sampling error is only one type of error to which surveys are subject. Results may also be affected by factors such as question wording, question order, and survey timing.