President pro tempore of the North Carolina Senate
The president pro tempore of the North Carolina Senate (more commonly, "Pro-Tem") is the highest-ranking (internally elected) officer of one house of the North Carolina General Assembly. The president of the Senate is the Lieutenant Governor of North Carolina, but the president pro tempore actually holds most of the power and presides in the absence of the Lt.
Source: Wikipedia — President pro tempore of the North Carolina Senate (CC BY-SA 4.0)