We examine the social-psychological and personality bases of support for radical right parties (RRPs), using cognitive-motivational approaches of ideology. Our comprehensive model includes core ideological variables which mediate personality traits (Big Five) or how individuals engage in social relationships and accommodate novel stimuli. Structural equation models were tested in an Austrian population sample to examine support for a RRP, the FPO. Our results suggest that a "perceived immigrant threat" and, in part, social dominance orientation are directly related to RAP support, whereas right-wing authoritarianism has consistent indirect (mediated) impact Associations with lower Openness to Experience, lower Agreeableness, and to some extent also with Conscientiousness are mediated by the ideological variables. The conclusion discusses how RRPs' success and communication strategies can be linked to basic psychological motivations. (C) 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).