General elections were held for the first time on February 12, 1990, in the newly created Autonomous Region in Muslim Mindanao for the regional governor and vice governor.
The proclamation of Candao as governor and Loong as vice-governor was disputed by candidate Ali Dimaporo. However, the Commission on Elections dismissed the candidates appeals as lacking merit on March 21, 1990 while the Supreme Court of the Philippines lifted their restraining order on said proclamation on June 26, 1990.[2]