A political family or political dynasty is a family in which several members are involved in politics, particularly electoral politics. Members may be related by blood or marriage; often several generations or multiple siblings may be involved.
A royal family or dynasty in a monarchy is generally considered to not be a "political family," although the later descendants of a royal family have played political roles in a republic (such as the Arslan Family of Lebanon would be). A family dictatorship is a form of dictatorship that operates much like an absolute monarchy, yet occurs in a nominally republican state.
In the United States, many political dynasties have arisen.
The Kennedy family is one of the strongest political dynasties in American History, with four generations of powerful politicians. Patriarch Patrick Joseph Kennedy (Massachusetts state Senator), was followed by his son Joseph P. Kennedy (US Ambassador to the UK). The sons of Joseph P. Kennedy include John F. Kennedy (The 35th President of the United States), Ted Kennedy (U.S. Senator), and Robert F. Kennedy (U.S. Senator and presidential candidate). The next generation includes Patrick Joseph Kennedy II (U.S. Representative from Rhode Island), and Joseph Patrick Kennedy II (U.S. Representative from Massachusetts).