The Alliance for Democracy is a progressive opposition political party in Nigeria. It was formed on 9 September 1998. At the 2003 legislative elections, 12 April 2003, the party won 8.8% of the popular vote and 34 out of 360 seats in the Nigerian House of Representatives and 18 out of 109 seats in the Nigerian Senate. The party was formed to promote the cause of the Yoruba people in the Nigerian federation following the annulment of the June 12, 1993 presidential election widely believed to have been won by Chief M. K. O. Abiola, a Yoruba multi-millionaire businessman.