faction-based politics
Refers to political systems or situations where internal factions or cliques dominate decision-making, often at the expense of broader party or public interest.
Faction-based politics is hindering reform.
That party has long been plagued by faction-based politics.
Compound of 派閥 (faction, clique) and 政治 (politics, government). The term is a straightforward Sino-Japanese compound describing a political dynamic.