The Sweden Democrats (Sverigedemokraterna) has in recent years distinguished themselves in the arena of library policy and have initiated several controversial proposals in this field that goes against what can be considered the traditional public library mission in Sweden. These proposals, although much written about in media has been the focus of few studies and not one single study has focused exclusively on the Sweden Democratic library policy field as a whole. Therefore it has been my intention to do a textual analysis on thirteen political documents concerning library policy from the Sweden Democrats during the years 2018 to 2021 on all the political levels of decision making in Sweden: national, regional and municipal. With the help of researcher Dorte Skot-Hansens model of rationalities in nordic cultural policymaking I have tried to identify the predominant lines of policy in the material and the conclusion is essentially two main rationalities. The first one is the social conservative rationality in which the main goal is to preserve traditional Swedish values, which can be found on all political levels. The other one is the radical right rationality which is mostly distinct in the municipal and regional level and in which the main goal is to assimilate citizens into the Swedish culture. Both these rationalities make up the main political currents in the library policy of the Sweden Democrats which I have christened the the rationalitities of national identity.