If this is the working definition, then it can either be a manifested occurrence or a political theory. Class politics, for example. It can either be ideologic

If this is the working definition, then it can either be a manifested occurrence or a political theory. Class politics, for example. It can either be ideological in the sense that you think people should group together politically based on class interest. Or, it can just be what happens. IE, the society has a politically prominent class structure and people group politically around that. Same for tribal politics, etc.