How the poll was conducted

Last update: April 29, 2009 - 11:51 PM

Today's Star Tribune Minnesota Poll findings were based on telephone interviews conducted April 20 to April 23 with a representative sample of 1,042 Minnesota adults 18 years and older. Interviews were conducted under the direction of Princeton Survey Research Associates International.

Results of a poll based on 1,042 interviews will vary by no more than 4 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 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 in which the poll was taken.

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

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