IPAC said this in a statement by its National Publicity Secretary, Mr Agbo Major on Friday in Abuja.
It described the Senate’s decision as arbitrary, counterproductive and an assault on Nigerian democracy.
“Placing a fiat order on all political parties by the Senate to use direct primary is an affront on the right and liberty of political parties to decide how their candidates emerge for secondary elections.
“It is also a deliberate attempt to kill young political parties that are set to displace the old political parties championing this following their remarking showing in some elections.
“Imposing direct primary on parties is a giant step backward in our collective efforts at building a strong, virile, progressive and enduring democracy in Nigeria,” IPAC said.
“The financial cost of direct primary that involves all registered members of a political party in the constituency is enormous which only parties in government can afford.
“ It will suffocate new parties and impede the nation’s democratic advancement,” it added.
The council said that political parties should be at liberty to adopt any mode of nominating their candidates for elections.
“Anything short of this is an invitation to anarchy, confusion and political upheavals,” IPAC said.(NAN)