Ideologue as a noun is an advocate of a particular ideology, especially an official exponent of that ideology. while Ideologist as a noun is one who theorizes or idealizes; one who advocates the doctrines of ideology.
Part of speech: noun
Definition: An advocate of a particular ideology, especially an official exponent of that ideology.
Part of speech: noun
Definition: One who theorizes or idealizes; one who advocates the doctrines of ideology.
We hope you now know whether to use Ideologue or Ideologist in your sentence.