How the poll was conducted

Last update: April 26, 2009 - 12:04 AM

HOW THE POLL WAS CONDUCTED

Today's Star Tribune Minnesota Poll findings were based on telephone interviews conducted Monday through Thursday 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 4.0 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 the poll was taken.

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

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