 When Guéï was ousted following the disputed results of the October 2000 presidential election and FPI leader Laurent Gbagbo was sworn in as President, Koulibaly retained his post as Minister of the Economy and Finances, while gaining the role of Government Spokesman.He remained in those posts until 15 January 2001.Koulibaly stood as an FPI candidate in the December 2000 parliamentary election and was elected to the National Assembly from Koumassi constituency.