Overall voting participation in the 2015 Swiss federal elections was 48.41% according to the daily 20 Minutes, slightly lower than the 48.5% turnout for the 2011 Federal elections. The 50% mark has not been passed since 1979.
The citizens of some cantons were more enthusiastic than others. This time the winner was Schaffhausen with 62.65% voting – voting is compulsory in Schaffhausen – followed by Obwalden (59.51%) and Nidwalden (58.33%). In French speaking Switzerland, Valais took the lead with 59.76%, while Vaud managed 42.93% and Geneva 43.59%. The worst performing canton was Neuchatel with 42.35%.
Read full 20 Minutes article (in French)