The opposition has crafted a motion that will be tabled in all Nasa-controlled counties from next week to allow the formation of the people's assemblies in the devolved units.
The Raila Odinga-led National Super Alliance (Nasa) has fashioned the assemblies as the way out of their refusal to accept the declaration of President Uhuru Kenyatta as the winner in the October 26 repeat presidential election.
In counties where Nasa has the majority in the assemblies, the coalition said, the motion to form citizen assemblies would be adopted.
In areas where they do not have the House numbers, however, the assemblies will be formed directly by the people without going through the county assemblies.
"The people's assembly will be in each and every county. You will be surprised to know that in counties in central Kenya, young men are already organising themselves to form these assemblies ... An oligarch has perched itself at the top and forgotten that there are Kenyans at the bottom," Nasa co-principal Moses Wetang'ula told journalists at the Okoa Kenya offices in Lavington, Nairobi.
The assemblies, Nasa said, will be have a taskforce that will be charged with coming up with suggestions of how to change the Constitution— including the structure of government and the elections regime.
Mr Odinga withdrew from the repeat presidential poll protesting lack of elections reforms and demanded a new poll 90 days after fresh nominations.
"Last week, we as Nasa announced that we do not recognise the the exercise on October 26 as an election under the Constitution of Kenya," Mr Wetangula said.
"We equally do not recognise the declaration of Uhuru Kenyatta as the president-elect as a constitutional pronouncement capable of constituting him as a legitimately elected president," he said.