General elections were held in Niger in 1999; the first-round of the presidential elections was held on 17 October, with a run-off held alongside National Assembly elections on 24 November. The elections followed a coup d'état on 9 April, in which Ibrahim Baré Maïnassara, who had led an earlier coup in January 1996 and won disputed presidential elections, was assassinated. Coup leader Daouda Mallam Wanké initiated a transitional period that concluded with the victory of Mamadou Tandja, the candidate of the National Movement for the Development of Society (MNSD), over Mahamadou Issoufou, the candidate of the Nigerien Party for Democracy and Socialism (PNDS), in the run-off. The vote for the first National Assembly of the Fifth Republic, which had originally been scheduled for October, but delayed in August, also saw a victory for the MNSD, which won 38 of the 83 seats. It formed a coalition with the Democratic and Social Convention in order to gain a majority in the Assembly.