The ESS survey (European Social Survey, http://www.europeansocialsurvey.org) emerged from the need to obtain comparative data in Europe on a number of issues of political science, sociology, social psychology, mass communication or economics. The ESS is a study introduced in 2002 and replicated every two years. This is the tenth edition of the study in Switzerland. The ESS provides indicators on the practices and representations of the Swiss population, making it possible to compare them with European countries and to observe the evolution over time. The ESS 2021 R10 edition focuses on 'Democracy' and 'Digital social contacts'. As the field has been delayed by the COVID-19 pandemic, a specific small module on this topic has been added. The fielded modules of Round 10 are: A) Media and social trust B) Politics C) Subjective well-being, social exclusion, religion, national identity F) Socio demographics D) Democracy G) Digital social contacts H) Human values I) Test questions K) COVID-19 V) Interview method and experience J) Interviewer self-completion questions