2014 Riksdag Election and Reinfeldt Resignation
On 14 September 2014 the red–green opposition under Stefan Löfven defeated the Alliance, the Sweden Democrats doubled to 12.9 % and became the third party, and Fredrik Reinfeldt resigned as PM and Moderate leader the same evening — ending eight consecutive years of centre-right rule.
The 14 September 2014 Riksdag election was both a clear defeat for the Reinfeldt II Alliance and an awkward win for Stefan Löfven’s red–green opposition. Social Democrats gained little; the Moderates collapsed; the Sweden Democrats roughly doubled to 12.9 % and became the third-largest party in the chamber. No bloc held a majority.
That same evening Fredrik Reinfeldt announced he would resign as prime minister and as Moderate leader. The choice was structural rather than purely personal: Reinfeldt accepted that the Alliance compatibility regime he had built since 2006 could not be reassembled in a Riksdag where SD held the marginal vote on every motion. The caretaker handover concluded on 3 October 2014 when Löfven I took office — a single-MP minority coalition of S and MP.
The election did not produce stable government, only the shape of the instability to follow. Within ten weeks the budget crisis would force the December Agreement, and the 2018 deadlock would carry the same arithmetic to its outer limit.