It is described as that, but I have doubts that any "left" tendencies in there is just to make facism more effective. As I remember a pod episode of the head of that party, then he talks about how Marx described workers as alienated cogs in a machine, basically, and that we should use that by controlled sterilization of immigrants turn their offspring into cogs for the swedish industry/society. Sort of. I don't know if that really could be classified as a continuation of Marxist thought, but sure.