How the poll was conducted

  • Updated: September 26, 2010 - 7:15 AM

Today's Star Tribune Minnesota Poll findings were based on land line and cell phone interviews conducted Sept. 20-23 with a representative sample of 949 likely voters.

HOW THE POLL WAS CONDUCTED

Today's Star Tribune Minnesota Poll findings were based on 825 landline and 402 cell phone interviews conducted Sept. 20-23 with a representative sample of Minnesota adults. Of that sample, 949 were deemed to be likely voters, and the poll results are based on those respondents. Interviews were conducted under the direction of Princeton Survey Research Associates International.

Results of a poll based on 949 interviews will vary by no more than 4.1 percentage points, plus or minus, from the overall population 95 times out of 100. Margins are larger for groups within the sample, such as Democrats and Republicans.

The self-identified party affiliation of the random sample is: 35 percent Democrat, 28 percent Republican and 28 percent independent. The remaining 9 percent said they were members of another party, no party or declined to answer.

Sampling error does not take into account other sources of variation inherent in public opinion surveys, such as nonresponse, question wording or context effects. In addition, news events may have affected opinions during the period the poll was taken.

Readers can e-mail questions to djmcgrath@ startribune.com.

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