The Senate is the upper chamber of Nigeria's bicameral legislature, the National Assembly of Nigeria. The National Assembly (popularly referred to as NASS) is the nation's highest legislature, whose power is to make laws. It is made up of 109 senators. 
The President of the Senate is the presiding officer of the Senate, whose chief function is to guide and regulate the proceedings in the Senate. The Senate President is third in the Nigerian presidential line of succession.