Wiktionary
ideocracy
n. government based on a monistic ideology
Wikipedia
Ideocracy
Ideocracy is a term describing government or social management based on a monistic ideology. Every government has ideological bases from which assumptions and policies are made, but ideocracies are governments where one dominant ideology has become deeply ingrained into politics, and where, generally, politics have become deeply ingrained into most or all aspects of society. The ideology of an ideocracy presents itself as an absolute, universal, and supreme system for understanding social life, similar to the position of a god in monotheism.