The aim of this paper is to investigate what influences the degree of sympathy for the Sweden Democrats in between 2007-2015 and how this has changed over time. The essay is based on two different theories, one of which claims that the Sweden Democrats' sympathizers are ”losers of modernisation”, where the socio-economic factors are the most important explanation factor for explaining their sympathy for the Sweden Democrats. The second theory highlights instead that the Sweden Democrats' sympathizers focus on issues and party leaders, so their preferences in these areas are the most important explanatory factors for their sympathy for the Sweden Democrats. This essay is based on regression analyzes that utilize data from Super-Riks-SOM, which is collected by the SOM-Institute in Gothenburg. The essay concludes that the issues and the party leadership are the most important factors explaining  to the degree of sympathy for the Sweden Democrats in 2007-2015, and that the importance of these factors have gradually increased during these years while the importance of socio-economic factors have decreased.