How did they decide that Tallahassee is the capital of Florida?

The capital city of Florida is actually Tallahassee, not `Tallahasee`.

In 1824, two towns were competing to become the new capital of the Florida Territory: Pensacola and St. Augustine. After much debate, the decision was made to create a new city in Leon County to serve as the capital. This new city was named Tallahasse by its founder, the Florida Senator David Levy Yulee.