About the Survey - August

About the Dataset

Conducted: August 7-17, 2008
Completions: 1093 total respondents; 763 likely voters
Modes used: telephone
Weights: votewgt

Sampling

The sample of telephone exchanges called was randomly selected by a computer from a list of active residential exchanges within the State of Minnesota. Within each exchange, random digits were added to form a complete telephone number, thus permitting access to both listed and unlisted numbers. The sample was designed to represent different regions of the state in proportion to the number of adults living in each region. Within each household, one adult was selected to be the respondent for the survey.

Response Rate

The response rate for the survey was 35.52%, calculated using the Response Rate 3 formula developed by the American Association for Public Opinion Research (http://www.aapor.org/pdfs/standarddefs_4.pdf).

The final disposition codes for the survey were:

	Interviews	1093
	Partial Interviews	53
	Refusal and Break-Off	1243
	Non-Contact	91
	Unknown if Household	1182
	Not Eligible	4861

Likely Voter Model

Results are based on a model which adjusts responses according to the likelihood of a respondent voting. Likelihood to vote is based on the following factors: self-reported probability of voting in the upcoming election, voting in previous elections as reported by the respondent, enthusiasm for the 2008 election, and incorporates differential turnout levels in urban, suburban, and rural areas.

Weights Summary

The results have been weighted to reflect different probabilities of selection based on the number of adults in a household and the number of telephone lines reaching the household. Results were also weighted to reflect the demographic characteristics of Minnesota based on region, sex, age, education, and race.

How To Cite

Humphrey School Survey, University of Minnesota. (http://www.hhh.umn.edu/centers/cspg/index.php). THE 2008 AUGUST MINNESOTA SURVEY [dataset]. Minneapolis, MN: University of Minnesota, Center for the Study of Politics and Governance [producer and distributor].