In this review we have discussed the psycho-social literature on the relations between genetics and conservatism. After describing the ACE model, i.e. the main theoretical and methodological approach in this research field, and the main dependent variables used in the studies on this issue, we have presented some classic and some recent research showing that, in spite of a number of methodological limitations, conservatism is, at least in part, influenced by genetics. The main theoretical and political conclusions stemming from this research corpus are discussed.