Recognising that the members should be trained, it purchased a farm at Bommersvik in order to form a union school.
Bertil Löfberg argued in favour of atomic weapons, and was opposed by Oskar Lindkvist.
The party made efforts to reform itself during this period, and tried to build a folkhemmet, a concept similar to that of the Welfare State.
The presidents Ingvar Carlsson (1961–1967) and Bosse Ringholm (1967–1972) characterized this period as a time of success for Sweden, and social reforms could proceed rapidly.
1975–1977 was Jerry Smith, president of the IUSY, was the first Swede to the post and was elected to Congress in Brussels in Belgium.
Chairman Jan Nygren, who was re-elected, and Bernhardsson came after some mutual distrust, cooperated and fighting in the Federation calmed down.
This solution was repeated at the 2005 congress when the president and secretary were taken from a separate wing in order to calm conflicts in the organization.
This was largely because the Soviet Union had fallen and that abuses in the Eastern Bloc damaged the reputation of democratic socialism.
The left-wing thought that it would be contrary to the traditions within the movement; it would be a betrayal of the foundations to move that way.
The Election Committee could not find a compromise and left-wing vice-chairman Anders Ygeman was forced to leave the Board when the post was abolished.
At Congress in 1999 in Västerås, a left-wing candidate, Luciano Astudillo, from SSU district Skåne, almost became president.
Differences between factions and a loaded Congress defeated Astudillo, and Mikael Damberg from Stockholm County SSU-district, won with votes 126-124.
The union gradually became more positive toward the EU and in 2001 the Congress almost considered approving Swedish EMU membership.
2000 was SSU hosted the International Union of Socialist Youth's World camp in Malmö with approximately 2000 participants.
What the left-wing most criticized was that programs replaced the 'democratic socialism' with 'social democracy' which was thought an ideological formulation when it seemed clear that SSU was socialist.
On 21 January 2002, party member Fadime Sahindal was murdered by her father in an honor killing.
In media, it has been claimed that the choice of Shekarabi may have been surrounded by some irregularities, which created some problems for the federation.
It was alleged that money from the Development Activities was used to finance Shekarabis's internal election campaign.
2004 Anna Sjödin was elected vice-president of the International Union of Socialist Youth in Budapest.
The police launched an investigation when they suspected benefit fraud because SSU received financial assistance based on its membership.
Records were updated and to Congress, the Federal proposed that central members should exercise better control, so that districts could not systematic cheating.
The federal leadership was divided up so that the right-wing got the chair Anna Sjödin and left-wing union secretarial post Mattias Vepsä.
In 2006, Anna Sjödin was re-elected vice-president of the International Union of Socialist Youth Congress in Esbjerg.
In December 2006, Sjödin resigned from the presidency after being sentenced for insult, violence against officials, violent resistance and an arbitrary act.
Measures were introduced to prevent cheating, which led to the fall in membership by over two thirds over one and a half years, and SSU was no longer the country's largest political youth league.
Jytte Guteland from the Stockholm County SSU-district and considered right-wing was nominated for the office of Federal.
There was discontent in parts of the right-wing because the Stockholm County SSU-district and Jytte Guteland's other support district had handled the Inter-democracy poorly.
In the spring, it was decided to hold a divided caucus to advocate Jytte Guteland to the Federal SSU.
The congress elected Philip Botström as the new president of SSU and Andrea Törnestam as secretary general.
Two people, Lisa Nåbo and Amalia Rud Pedersen ran for the position of president.