How the poll was conducted

  • Updated: September 28, 2009 - 9:36 PM

 

Today's Star Tribune Minnesota Poll findings were based on telephone interviews conducted Sept. 21-24 with a representative sample of 1,000 Minnesota adults, 18 years and older. Interviews were conducted under the direction of Princeton Survey Research Associates International.

Results of a poll based on 1,000 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: 34 percent independent, 33 percent Democrat, 25 percent Republican, and the remaining 8 percent said they were members of another party, no party or refused to answer.

The poll does not include interviews with cell phone users.

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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