A survey of Canadian legislative caucuses conducted between 1983 and 1994 by Bob Altemeyer showed an 82% correlation between party affiliation and score on a scale for right-wing authoritarianism when comparing right-wing and social democratic caucuses. There was a wide gap between the scores of the two groups, which was filled by liberal caucuses. His survey of American legislative caucuses showed scores by American Republicans and Democrats were similar to the Canadian Right and liberals, with a 44% correlation between party affiliation and score.