1958 ATP Snap Election (Extraval)
After SAP's mandatory ATP pension bill was defeated 117–111 in the Second Chamber, Erlander dissolved parliament and called a snap election in 1958. SAP won approximately 46.2 % — an increase from 1956 — and built the mandate that carried the 1959 ATP bill through by a single vote. This remains, as of 2026, the last snap election in Swedish parliamentary history.
After SAP’s mandatory ATP pension bill was defeated in the Second Chamber by 117 votes to 111, Tage Erlander dissolved parliament and called a snap election in spring 1958. SAP won approximately 46.2 % of the vote, up from 1956. The seat distribution still did not produce a clean SAP majority — the road to passage in 1959 would depend on a single defector — but the campaign had been fought directly on the pension question and gave ATP enough political mandate to survive the close Riksdag vote that followed.
As of 2026 this is the last snap election (extraval) in Swedish parliamentary history. The constitutional path has not been used since, even though the 1974 Instrument of Government preserved an analogous mechanism (extra val) for the unicameral Riksdag. Sweden chose stability over the disruptive use of dissolution; the 1958 example, settled by ballot rather than by negotiation, became precisely the kind of event later generations of party leaders preferred to avoid.
The election is the clearest historical example of issue-specific dissolution producing policy outcome in modern Sweden. It is regularly invoked in debates over whether snap elections should be more available — and over whether 1957 consultative referendums plus 1958 dissolution is a model worth repeating.