Parties in Switzerland: National Council elections 1971–2007 - Strength of left-wing and central parties (percentage of votes)

Parties in Switzerland: National Council elections 1971–2007 - Strength of right-wing parties (percentage of votes)

Parties in Switzerland: National Council elections 1971–2007 - Cumulated voter percentage of the governmental parties

Parties in Switzerland: National Council elections 1971–2007 - Number of parties