Context, Elites, Media and Public Opinion in Referendums: When Campaigns Really Matter; C.de Vreese Opinion Formation and Change in Referendum Campaigns; L.LeDuc PART 1: THE IMPORTANCE OF CONTEXT AND POLITICAL SYSTEMS The Strategic Context of Referendums on the EU Constitution; S.Hug Referendum Campaigns: Changing What People Think or Changing What They Think About?; M.Marsh Campaign Information and Voting Behaviour in EU Referendums; S.Binzer Hobolt PART 2: TURNOUT AND POLITICAL PARTICIPATION The Participation in Swiss Direct-democratic Votes; H.Kriesi Turnout in Referendums; P.Neijens, P.van Praag, W.Bosveld & J.Slot E-voting and Electoral Participation; A.H.Trechsel PART 3: UNDERSTANDING THE VOTE CHOICE AND THE OUTCOME Immigration, Identity, Economy and the Government; C.de Vreese & H.G.Boomgaarden The Ideological Response: Saying No to the Euro; H.Oscarsson The Determinants of Voting Choices on Environmental Issues; P.Sciarini, N.Bornstein & B.Lanz