An extensive literature deals with the socio-political and electoral factors that inspire and explain far right party development. Very often in this discussion, far right parties (FRPs) are hypothesised as independent entities that do not have an influence on -or are influenced by -other far right parties. This critical reflection challenges that assumption and suggests that trans-national diffusion patterns between far right parties are not only underdeveloped in existing explanations of far right development, but are also critical for an improved and more complete understanding of the far right party phenomenon as a whole. In an initial discussion of diffusion, this particular article emphasises its prominence as an explanatory factor of far party development and reflects in more detail upon its role, extent and scope. On a more normative note, a more comprehensive and accurate explanatory model of far right party development could prove to be useful to anticipate future societal evolutions and political developments.