Dataset details
Ref dataset: 1184 (2.0.0)
Dataset title
Selects 2019 Panel Survey (waves 1-4)
DOI 10.23662/FORS-DS-1184-2
Previous versions 1184-1:     https://doi.org/10.23662/FORS-DS-1184-1

Ref dataset 1184
Ref study 13846
Dataset language English
Additional information
Dataset version 2.0.0
Version notes Added a combined turnout variable to the data (W2_3_voted) and corrected the party weight variable (W2_3_weight_p) as well as the combined weight (W2_3_weight_tot). Added data from wave 4, which was collected between September 28, 2020 and November 2, 2020 (N=118 additional variables).
Errata
Publication date 24.02.2021
See variables on De Visu
Bibliographical citation Selects: Panel Survey (waves 1-4) - 2019-2020 [Dataset]. Distributed by FORS, Lausanne, 2021. www.selects.ch https://doi.org/10.23662/FORS-DS-1184-2
Data type Quantitative data
Consent of respondents
Time method Longitudinal
Media
  • Digitalized data file
Data collector
Available document types
  • Collection instruments
  • Supplementary collection materials (showcards, etc.)
  • Codebook
  • Technical report
Remarks about the documentation
Restriction Academic research and teaching
Special order
Special permission None
Status Published

Selects 2019 Panel Survey Data (SPSS)
Collection date - begin 20.05.2019
Collection date - end 02.11.2020
Analysis unit
  • Individual
Universe Swiss citizens aged 18 years or older living in Switzerland
Sampling description Simple random sample of 25'575 persons from the whole of Switzerland with Swiss nationality aged 18 or older on the day of the elections. The sample is based on a individual register sampling frame maintained by the Swiss Federal Statistical Office (FSO).
Mode of data collection
  • Self-administered questionnaire: Web-based
Data collection instruments
  • Questionnaire
Data source
Weighting information Three weighting variables are provided: 1. weight_t: Turnout weight to correct for the overrepresentation of voters in the sample, according to the official results. This is meant to be used in conjunction with the combined W2&W3 turnout variable "W2_3_voted" 2. weight_p: Party choice weight to correct the distribution of votes according to the official results. This is meant to be used in conjunction with the combined W2&W3 vote choice variable "W2_3_f11800main6" 3. weight_tot: Combined turnout and party choice weight
Response rate Response rates per wave: Wave 1: 31%; Wave 2: 68%; Wave 3: 65%; Wave 4: 85%. For the first wave, respondents were contacted by letter for a web interview. The first contact was a pre-notification letter with information on the survey and a flyer with information about Selects and past results. The second letter included the URL to participate in the survey, a personal login code, as well as a postal cheque of 10 Swiss francs that respondents could cash at any post office. Two reminders were also sent. At the end of the survey, respondents were asked to provide an email address for contact in subsequent waves. A raffle of 5 iPads, conditional on participating in all three waves, was organised to boost enrollment in the panel as well as to reduce attrition. The second wave was conducted during the election campaign, between September 2nd and October 17. The invitations were sent by letter, followed by two reminders. The first reminder was sent by email and by letter for respondents who had not provided an email address, and the second reminder was sent by postal letter for everyone. The third wave was conducted immediately after the federal elections. All participants of wave 1 were invited to participate in this post-election wave. Invitations were sent out by postal letter. Three reminders were sent. The second reminder was sent by postal letter to everyone, whereas the first and third reminder were sent by email for those who had provided an email address in wave 1. At the end of the third wave, respondents were asked if they agreed to be contacted again for yearly follow-up surveys. In total, N=3030 respondents gave consent. The fourth wave was conducted between September 28 and November 2nd, 2020. A week in advance, consenting respondents from wave 3 received a pre-notification letter, informing them about the upcoming survey. The invitation with the personalised login was sent out by email. Sample members received up to three reminders (two by email, one by letter). Respondents were offered 10 Swiss francs for their participation in the fourth wave.
Data completeness In all waves, respondents who took less than one third of the median duration to complete the questionnaire were removed from the data (speeders). In addition, incomplete responses (i.e. more than half of key non-filtered questions were not answered) were also removed. In all waves, only respondents whose age and sex corresponded to the sample information were retained.
Number of cases 7939
Number of variables 612

Selects 2019 Panel Survey Data (Stata)
Collection date - begin 20.05.2019
Collection date - end 02.11.2020
Analysis unit
  • Individual
Universe Swiss citizens aged 18 years or older living in Switzerland
Sampling description Simple random sample of 25'575 persons from the whole of Switzerland with Swiss nationality aged 18 or older on the day of the elections. The sample is based on a individual register sampling frame maintained by the Swiss Federal Statistical Office (FSO).
Mode of data collection
  • Self-administered questionnaire: Web-based
Data collection instruments
  • Questionnaire
Data source
Weighting information Three weighting variables are provided: 1. weight_t: Turnout weight to correct for the overrepresentation of voters in the sample, according to the official results. This is meant to be used in conjunction with the combined W2&W3 turnout variable "W2_3_voted". 2. weight_p: Party choice weight to correct the distribution of votes according to the official results. This is meant to be used in conjunction with the combined W2&W3 vote choice variable "W2_3_f11800main6" 3. weight_tot: Combined turnout and party choice weight
Response rate Response rates per wave: Wave 1: 31%; Wave 2: 68%; Wave 3: 65%, Wave 4: 85%. For the first wave, respondents were contacted by letter for a web interview. The first contact was a pre-notification letter with information on the survey and a flyer with information about Selects and past results. The second letter included the URL to participate in the survey, a personal login code, as well as a postal cheque of 10 Swiss francs that respondents could cash at any post office. Two reminders were also sent. At the end of the survey, respondents were asked to provide an email address for contact in subsequent waves. A raffle of 5 iPads, conditional on participating in all three waves, was organised to boost enrollment in the panel as well as to reduce attrition. The second wave was conducted during the election campaign, between September 2nd and October 17. The invitations were sent by letter, followed by two reminders. The first reminder was sent by email and by letter for respondents who had not provided an email address, and the second reminder was sent by postal letter for everyone. The third wave was conducted immediately after the federal elections. All participants of wave 1 were invited to participate in this post-election wave. Invitations were sent out by postal letter. Three reminders were sent. The second reminder was sent by postal letter to everyone, whereas the first and third reminder were sent by email for those who had provided an email address in wave 1. At the end of the third wave, respondents were asked if they agreed to be contacted again for yearly follow-up surveys. In total, N=3030 respondents gave consent. The fourth wave was conducted between September 28 and November 2nd, 2020. A week in advance, consenting respondents from wave 3 received a pre-notification letter, informing them about the upcoming survey. The invitation with the personalised login was sent out by email. Sample members received up to three reminders (two by email, one by letter). Respondents were offered 10 Swiss francs for their participation in the fourth wave.
Data completeness In all waves, respondents who took less than one third of the median duration to complete the questionnaire were removed from the data (speeders). In addition, incomplete responses (i.e. more than half of key non-filtered questions were not answered) were also removed. In all waves, only respondents whose age and sex corresponded to the sample information were retained.
Number of cases 7939
Number of variables 612