1999 Oyo State gubernatorial election
The 1999 Oyo State gubernatorial election occurred in Nigeria on January 9, 1999. The AD nominee Lam Adesina won the election, defeating the PDP candidate. Lam Adesina emerged AD candidate. Electoral system. The Governor of Oyo State is elected using the plurality voting system. Primary election. AD primary. The AD primary election was won by Lam Adesina. Results. The total number of registered voters in the state was 2,397,270. Total number of votes cast was 714,312, while number of valid votes was 693,349. Rejected votes were 20,963.