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September 2021 Survey
Strategies 360 conducted a live telephone survey of 450 registered voters in Seattle. Interviews were conducted September 13-16, 2021. A combination of landline, cell phones, and voter file-based online interviews via text message were used to ensure greater coverage of the population sampled. The margin of error for a survey of 450 interviews is ±4.6% at the 95% confidence level for each individual sample. The margin of error is higher for subsamples. Other sources of error not accounted for by the stated statistical margin of error include, but are not limited to, question wording, question order, coverage bias, and response bias.