According to a letter sent to Senate President Ahmad Lawan, Senator Rochas Okorocha (APC, Imo West) has entered the presidential race for 2023.
Lawan read the letter at the start of the plenary on Wednesday.
Okorocha has scheduled a press conference for next week, where he will discuss his plans.
Ebonyi State Governor David Umahi and Senate Chief Whip Orji Uzor Kalu join the former Imo governor.
On the APC platform in the south east, there are now three aspirants for the presidency in 2023.
In the South West, only Asiwaju Bola Tinubu has made his plan public.