the weight assigned to the respondent as a result of the weighting by voting_decision_federal_proposal_1, voting_decision_federal_proposal_2, voting_decision_federal_proposal_3 and is_vaccinated_covid (using an iterative proportional fitting procedure; only voters)

respondent's age at the end of the year of the ballot_date (derived from year_of_birth_official)

respondent's age group (derived from age)

respondent's marital status (official cantonal register information; reduced)

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

erhält keine «easyvote»-Broschüre von der Gemeinde
erhält «easyvote»-Broschüre von der Gemeinde

dummy value indicating whether or not the respondent automatically receives the "easyvote" booklet by postal mail (requires that the respondent's municipality has subscribed to this service for the respondent's age range)

respondent's substantive participation status at the current ballot (blank votes count as 'not participated')

respondent's participation status regarding the federal proposals of the current ballot (blank votes count as 'participated')

respondent's substantive participation status regarding the federal proposals of the current ballot (blank votes count as 'not participated')

dummy value indicating whether or not the User-Agent string of the respondent's web browser corresponds to a mobile device (smartphone, tablet etc.; only online respondents)

respondent's latent expertise on the federal proposal "Bestimmung der Bundesrichterinnen und Bundesrichter im Losverfahren (Justiz-Initiative)" (based on a 2–3 parameter logistic Item Response Theory (IRT) model, also known as Birnbaum model, fed with passed_skill_question_1_federal_proposal_2, passed_skill_question_2_federal_proposal_2 and passed_skill_question_3_federal_proposal_2; only voters)

respondent's latent expertise on the federal proposal "Bestimmung der Bundesrichterinnen und Bundesrichter im Losverfahren (Justiz-Initiative)", measured in 5 discrete categories (based on latent_expertise_federal_proposal_2; only voters)