2011. Retrieved 2 June 2011. "ISOPUBLIC POLITBAROMETER im Auftrag der SonntagsZeitung & Le Matin Dimanche" (PDF). Isopublic.ch. Archived from the original...
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7.1% 15 September 2013 Isopublic/Le Matin 24.3% 19.6% 14.1% 13.1% 7.3% 6.1% 6.6% – – – – – – – 4.7% 21 October 2012 Isopublic/Blick[permanent dead link]...
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