respondent's current employment situation (reduced)

the political party (recoded extended set) the respondent feels closest to his/her own political stance

respondent's monthly gross equivalised income (OECD square root scale) based on average monthly gross household income

empirical quarter the respondent's monthly gross equivalised income belongs in

dummy value indicating whether or not the respondent answered the skill question "What agreement with the European Union (EU) is the primary issue in the vote on the federal «Begrenzungsinitiative»" about the federal proposal "Volksinitiative «Für eine massvolle Zuwanderung (Begrenzungsinitiative)»" correctly (only voters)

dummy value indicating whether or not the respondent answered the skill question "How large was the net immigration (difference between immigration and emigration) from the EU to Switzerland last year?" about the federal proposal "Volksinitiative «Für eine massvolle Zuwanderung (Begrenzungsinitiative)»" correctly (only voters)

dummy value indicating whether or not the respondent answered the skill question "If the Treaty on the Free Movement of Persons with the EU is terminated, which of the following agreements automatically cease to be in force within six months as a result of the so-called guillotine clause?" about the federal proposal "Volksinitiative «Für eine massvolle Zuwanderung (Begrenzungsinitiative)»" correctly (only voters)

dummy value indicating whether or not the respondent answered the skill question "What is new compared to the current hunting law?" about the federal proposal "Änderung des Jagdgesetzes" correctly (only voters)

dummy value indicating whether or not the respondent answered the skill question "How many sheep and goats have been killed by wolves yearly since 2009?" about the federal proposal "Änderung des Jagdgesetzes" correctly (only voters)

dummy value indicating whether or not the respondent answered the skill question "Which of the following parties and organizations have issued a Yes recommendation on the hunting law?" about the federal proposal "Änderung des Jagdgesetzes" correctly (only voters)