This was the first election after
proportional representation was adopted. The country was divided into 25 districts - 20 multiple-member districts, with as many as 32 seats, and five were single-member districts. In each, seats were allocated based on parties' vote tallies. Every multi-member district saw multiple parties take seats. In some districts, no party took more than one seat. Unlike the previous
Plurality block voting system, each voter now had just one vote. Switzerland used a system of
apparentment, allowing parties to combine votes in the same district. ==Results==