For generations, scholars have used surveys to examine presidential greatness. However, the rising tide of politicization calls these ratings into question. Can those who study the presidency offer fair judgments regardless of their political affiliation? Does their affiliation alter judgments of presidential greatness in historical or contemporary terms? Using a 2018 expert survey of political scientists who study the presidency, we find that party affiliation and ideological differences do alter—albeit slightly—perceptions of presidential greatness for both past and present presidents up to and including Donald Trump. Our results call into question such ratings insofar as they exist absent the political and ideological context of the reviewer.