Erlander Cabinet II 1951–1957
The "red-green" coalition between Tage Erlander's Social Democrats and the Centre Party / Bondeförbundet, in office 1 October 1951 – 31 October 1957. It united the working-class and agrarian voter bases, marginalised the Liberal–Moderate opposition through the 1950s, extended housing allowances to pensioners in 1954, and collapsed when the 1957 supplementary-pension referendum (Line 1 SAP 45.8 percent, Line 3 right 35.3, Line 2 Centre 15) drove the Centre Party out of government.
Erlander II was sworn in on 1 October 1951 as a formal “red-green” coalition between SAP and the Centre Party (then Bondeförbundet). The pact united the working-class and agrarian electorates, gave Centre leader Gunnar Hedlund the Home Affairs ministry, and let Erlander use the coalition negotiations to remove Hildur Nygren from Education when the Centrists demanded that portfolio.
The coalition delivered six years of welfare-state expansion under Folkhemmet logic — housing allowances were extended to pensioners in 1954 — while marginalising the Liberal and Moderate opposition. The 1952 election confirmed the geometry (SAP 46 percent, Liberals 24.4, Centre 10.7); the 1956 election eroded it (SAP 44.58, Centre 9.45). The lingering 1952 Haijby scandal, involving allegations around the late King Gustaf V, surfaced as a political-management problem rather than a confidence challenge.
The coalition broke on the supplementary-pension question. The 1957 1957 pension referendum put the SAP-aligned Line 1 (45.8 percent) against the right’s Line 3 (35.3) and the Centre’s Line 2 (15) — three lines, and no way back. The Centre Party withdrew from government on 24 October 1957. The King designated the Liberals and Moderates as formateurs to explore a non-socialist cabinet, but the Centrists refused to join such a formation. Erlander was asked to form a minority government on 29 October; the Erlander III cabinet was sworn in on 31 October 1957.