At an MNSD congress held in November 1991, Amadou was elected as its Secretary-General, while Tandja Mamadou was elected as the President of the MNSD [REF].
In another election held in January 1995, an opposition alliance, primarily composed of the MNSD and the Nigerien Party for Democracy and Socialism (PNDS), won a majority of seats, resulting in cohabitation between the government, led by Amadou, and President Mahamane Ousmane.