2013 2013 Pre election study – Upper House – EN 2013 Post election study – Upper House – EN 2014 2014 Pre election study – Lower House – EN 2014 Post election study – Lower House – EN 2016 2016 Pre election study – Upper House – EN 2016 Post election study – Upper House – EN 2019 2019 Pre election study – Upper House – EN 2019 Post election study – Upper House – EN 2021 2021 Pre election study – Lower House – EN 2021 Post election study – Lower House – EN 2022 2022 Pre election study – Upper House – EN 2022 Post election study – Upper House – EN
