Question

How many of the 50 states use the same organization in their state legislatures

Answer 1

In the United States is the legislative body of any of the 50 U.S. states. The formal name varies from state to state. In 25 states, the legislature is simply called the Legislature, or the State Legislature, while in 19 states, the legislature is called the General Assembly. 
(https://en.wikipedia.org/wiki/State_legislature_(United_States)/