Opinions and Views of the Population of Ukraine: September 2025 (KIIS Omnibus 2025/09) – Data from a nationwide public opinion poll conducted by KIIS

"Opinions and Views of the Population of Ukraine" is a regular omnibus survey, conducted by Kyiv International Institute of Sociology (KIIS) among Ukraine's adult population and covering a wide range of topics. The data presented here is a subset of the survey conducted in September 2025 and includes KIIS's own research questions. Topics covered by the survey include: • Public opinion on war and peace: views on peace plans; belief in Ukraine's ability to win; preferred actions if US support stops; how long Ukrainians are ready to bear the war's burden; expectations for its duration; readiness to join the Defence Forces if needed; • Trust in Volodymyr Zelenskyy; • Views on holding national elections; • Public opinion on language policy approaches; • Attitudes toward Russia and Russians; • Emigration intentions; • Foreign policy orientations (EU, NATO, and Customs Union membership). Data collection took place from 2 to 14 September 2025. The full sample included 2,012 respondents, divided into subsamples for individual questions. The data is available in an SAV format (Ukrainian, English) and a converted CSV format (with a codebook). The Data Documentation includes a short overview and discussion of survey results (with frequency tables in Annex 1) as well as the relevant parts of the original questionnaire in Ukrainian (Annex 2).