Iniciogfs.Bern SWITZERLAND, June 2015. gfs.bern poll 1.7.15 Area: Switzerland Sample size: 2009 Sampling error: ±2.2% Method: ? Fieldwork date: 1-12 Jun. 2015 Pollster: gfs.bern Client: SRG SSR Source | Parties Etiquetas gfs.Bern Switzerland Facebook Twitter