political dynasty
Rare term referring to a family or group that maintains political power across generations.
A political dynasty has long continued in that country.
Refers to a dynasty in general, not necessarily political; 政治王朝 specifically emphasizes political power.
Compound of 政治 (politics) and 王朝 (dynasty). The exact origin is uncertain, but it likely emerged as a direct translation of the English term 'political dynasty'.