Who serves as the legal representative for a state government?

The state representative serves as the legal representative of the state government.

Explanation:

State representative serves as the legal representative of the state government as there are multiple of them elected by the state's population for the house of congress while the states also have senators who are separately elected and are only two for each state.

The difference between the two is also in their term lengths and the duties of representation as the senate is usually federal and the representative are to look out for the states.