Below are the names and links of a curated selection of public opinion data archives and collection firms from Canada and around the world.
National Election Studies
Canadian Public Opinion Research Data
Public Opinion Research Data
Canadian Election Study
Canadian Research Data Centre Network
Centre for the Study of Democratic Citizenship
Council of European Social Science Data Archives - Canada and the United States
Data Liberation Initiative
Institute for Social Research
Laurier Institute for the Study of Public Opinion and Policy
Queen's Research Data Centre
Statistics Canada data
Statistics Canada’s List of Data available at Research Data Centres (RDCs)
Global Public Opinion Research Data
International
Consortium of European Social Science Data Archives (International)
Inter-University Consortium for Political and Social Research (International)
Organisation for Economic Cooperation and Development (OECD)(International)
United Nations Statistics Division (UN)(International)
University of Michigan Institute for Social Research: Centre for Political Studies (International)
World Association for Public Opinion Research (International)
World Values Survey (International)
United States
American Association for Public Opinion Research (US)
American National Election Studies (US)
Insights Association (formerly Council of American Survey Research Organizations) (US)
Institute for Policy Research - University of Cincinnati (US)
National Opinion Research Centre (US)
The Odum Institute for Research in Social Science (US)
The Pew Research Centre (US)
PollingReport.com (US)
Public Opinion Strategies (US)
The Roper Centre (US)
Europe/UK
Economic and Social Research Council (EU)
Eurobaromoter (EU)
European Society for Opinion and Marketing Research (EU)
Eurostat (EU)
British Election Study (UK)
National Centre for Social Research (UK)
UK Data Archive (UK)
Sciences Po Center for Political Research (CEVIPOF)(France)
Société Française de Statistique (France)
Sondages CSA (France)
IFOP Banque de sondages (France)
German Social Science Infrastructure Services (Germany)
Russian Election Studies Dataverse (at Harvard)