1. "The European Constitution. Post Referendum Survey in Spain," Flash Eurobarometer 168, March 2005.
2. Data from the exit polls of the CSA, "Le vote au referendum sur le traite constitutionnel europeen: explication du vote et perspectives politiques," May 29, 2005.
3. IPSOS poll, May 29, 2005.
4. Pascal Perrineau, "Le referendum francais du 29 mai 2005. L'irresistible nationalisation d'un vote europeen" in P. Perrineau, ed.Le vote europeen 2004-2005(Paris: Presses de Sciences Po, 2005), 237.