Presidential elections were held in Gabon on 5 December 1993, the first time more than one candidate had contested a presidential election in the country. Incumbent PresidentOmar Bongo, in power since 1967, sought a five-year term against twelve other candidates. According to official results Bongo won in the first round with 51.2% of the vote. However, the main opposition leader, Paul Mba Abessole, alleged fraud, claimed victory, and threatened to form a rival government. Riots in 1994 practically brought the country to a standstill until Bongo agreed to attend a peace conference with opposition groups in September 1994, in which a coalition government was formed until the 1996 parliamentary election, which Bongo's Gabonese Democratic Party won by a landslide.