1991 Swedish General Election and Ny Demokrati Riksdag Entry
On 15 September 1991 the right-wing populist Ny Demokrati entered the Riksdag with 6.73% and 25 seats, the first populist breakthrough in modern Swedish parliamentary politics. The four-party Bildt coalition (M, FP, C, KD) replaced Carlsson II and depended on Ny Demokrati for its majority.
The September 1991 election turned out Ingvar Carlsson‘s Social Democratic government and replaced it with a four-party centre-right coalition led by Carl Bildt — M, FP, Centerpartiet and KD. The newcomer Ny Demokrati, founded by Ian Wachtmeister and Bert Karlsson, took 6.73% of the vote and 25 seats, becoming the first major populist anti-establishment party in modern Swedish parliamentarism.
Socialdemokraterna fell from 156 to 138 seats (37.71%); the Moderates took 80 seats (21.92%); the Liberals 33; Centerpartiet 31; the Christian Democrats 26 (first independent Riksdag entry); the Left 16. The new majority broke a 1980s convention that no Riksdag coalition should rest on a populist anti-establishment formation.
The constellation shaped the entire 1991–1994 term: it enabled the 1992 school voucher reform, the Securum bad bank resolution of the banking crisis, and the EEA-then-EU accession track. Ny Demokrati itself collapsed at the 1994 election, but it pre-figured the longer-lasting populist re-entry of Sverigedemokraterna from 2010 onwards.