Universe | The target population of the Campaign Panel comprises all German citizens who were eligible to vote in the election to the German Bundestag on September 24, 2017. Due to conducting the study online, not every German citizen eligible to vote had a chance to be selected for the survey. Thus, the frame population is restricted to German citizens eligible to vote who were members of the Online-Access-Panels conducted by Respondi AG and GapFish GmbH. The Respondi panel contained 65.000 to 70.000 members at the end of 2016. After completing a double opt-in registration procedure and filling in their master data, Respondi panel members are considered active, when they participated in a survey in the past three months, whereas GapFish panel members are considered active when they participated in a survey in the past 12 months. 113.000 members of the GapFish panel fulfill these criteria. The members of the Access-Panels are mainly recruited online. A smaller proportion is recruited by telephone.
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