Its executive secretary Maurice Kakou Guikahue said the party wants the electoral commission changed.
He said the party’s presidential candidate, Henri Konan Bedie, will be formally presented to delegates on 12 September in Yamoussoukro, the country’s political capital.
Ivory Coast’s President Alassane Ouattara is running for a controversial third term in the polls.
Former President Laurent Gbagbo and former rebel leader Guillaume Soro were barred from taking part because of a new rule that blocks those convicted of a crime from seeking electoral positions.
Mr Soro was convicted in absentia in April 2020 of embezzlement and money laundering, while Mr Gbagbo was sentenced in absentia in November 2019 for the “looting” of a local branch of the Central Bank of West African States.