The thesis will analyse how the Swedish right-wing party Sverigedemokraterna increased their popularity by following an anti-multiculturalism approach, which is done by a statistical analysis of European Social Survey data from the ESS rounds 2, 4, 6, 8and 10, together with a review and analysis of the Sverigedemokraterna election programmes. Academic works, such as Pippa Norris ‘Critical Citizens’, are used in the course of the thesis to understand how the Sverigedemokraterna uses concepts such as ‘Populism’ and ‘Political Trust’. This thesis works on understanding and answering the following questions: What are the aspects that caused the increasing popularity of the Sverigedemokraterna, which follows an anti-multiculturalism agenda? How has Sweden’s political identification on the left-right scale developed since the 2002 elections? Can both the left-right identification and the increased popularity of the Sverigedemokraterna be explained by a change of political trust? The main result is that the Sverigedemokraterna achieved becoming a part of mainstream politics and government by shifting the ethical boundaries of Swedish politics. The party started as a rather local party and worked its way up to the national level by staying true to its political agenda. Simultaneously, Sweden experienced a shift in its political orientation from the centre towards, both, the left and right wing. The thesis offers a continuation of the previous analysis of political trust and allows one to understand the contemporary political orientation of Sweden.