“No Title of Nobility shall be granted by the United States,” reads Article I of the Constitution.

Yet with their fondness for political dynasties, American voters have created their own notion of modern nobility: families such as the Kennedys, the Rockefellers, the Bushes, and the Bidens who win political office generation after generation.

Eleven current members of the Senate are the children of former senators or governors, or the spouses of former senators, governors, and even a president.