This is one of the most used regime type datasets in the world. It codes governments on a scale of -10 (highly autocratic) to 10 (highly democratic). Scores in the middle (0) are considered anocracies and are at the greatest risk of civil conflict.

Also highlighted in this interview is the role of demographic shifts in triggering identity politics, and the impact that's had on US politics.

Anocracy is another word for semi-democracy, or a government that mixes Democratic and autocratic features.

Identity (vs ideological) politics-- parties or alliances based on race, ethnicity, religion, etc. Decision-making and governing based on identity.