How did rulers get elected in Sparta?

In Sparta, rulers were not elected in the traditional sense; instead, they were dual kingship, with two hereditary kings from two separate royal families, the Agiads and the Eurypontids. These kings held their positions for life and were chosen based on lineage rather than election. Additionally, the Spartan political system included the Gerousia, a council of elders, which played a significant role in governance, but it did not elect the kings. The kings' authority was also complemented by the ephors, a group of five elected officials who held significant power in overseeing the kings and state affairs.