Unicameral Riksdag Agreement and Abolition Vote 1967–1968

In March 1967 the four established parliamentary parties — Socialdemokraterna, the Right (later Moderates), Centerpartiet, and Folkpartiet — agreed to replace Sweden’s bicameral Riksdag with a directly-elected unicameral chamber. On 17 May 1968 the First Chamber (Första kammaren) voted to abolish itself by 117 to 13. Sweden became fully unicameral from the 1971 Riksdag, the first single chamber elected under the transitional rules.

The 1967–68 agreement is the constitutional turning point that modernised Swedish parliamentary democracy from a nineteenth-century bicameral system to a twentieth-century unicameral one. It eliminated the indirect election of the First Chamber by county and city councils — a structural feature that had often buffered Second-Chamber majorities from being mirrored in legislative power. It also created the institutional precondition for the 1974 Instrument of Government (regeringsformen), which would replace the 1809 constitution, reduce the monarchy to ceremonial functions, and define modern Swedish constitutional democracy.

The vote sat at the end of a long reform process — the Författningsutredningen (1954–1963) and the Grundlagberedningen (1966–1972) — and could only be carried because the four established parties agreed in advance. Read in that light, the 1968 abolition vote is less an act of disruption than a moment when Sweden’s settled parliamentary system reached consensus to redesign itself.