Amosun, who also won a Senate seat as APC senator last week, is also supporting a member of the House of Representatives, Abdulkadir Akinlade, as governor as a member of the Allied Peoples Movement.
In Imo, APC has Senator Hope Uzodinma as its governorship candidate. Prince Dapo Abiodun is the candidate in Ogun.
Amosun was roundly criticised in February when he flooded an APC presidential rally in Abeokuta with APM supporters. The incident almost went awry as the APM mob nearly stoned President Muhammadu Buhari.