How the poll was conducted
The poll surveyed 589 randomly-selected English-speaking Minnesota adults statewide July 24-26 who live in landline and cell-phone households. For a sample of 598 respondents using these methods, one can be 95 percent confident that results in the poll will vary by no more than 4.8 percentage points, plus or minus, from a survey in which every adult in the state were surveyed. This does not include other, non-random sources of error, such as non-response effect, construct effect such as question wording or order, and the effects of news events on public opinion. The data were weighted using federal statistics on type of telephone service, geographic distribution, gender, race, ethnicity and age to ensure that the state's adult population was accurately represented and to take into account many of the sources of error above.
Daves & Associates Research, a Minneapolis-based market and opinion research consultancy, conducted the poll for MinnPost.com. Daves & Associates Research specializes in qualitative and quantitative public policy and market research.
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