NASA leaders announced a mega rally in Mombasa after police broke their electoral reforms protest on Friday.
Mvita MP Abdulswamad Nassir said all principals - presidential candidate Raila Odinga, DP hopeful Kalonzo Musyoka, Musalia Mudavadi and Moses Wetang'ula - will attend the Sunday rally.
Nassir criticised acting Interior CS Fred Matiang'i has no legal or moral authority to ban demos.
"He is declaring himself persona non-grata," he said, adding Matiang'i's role is "just to provide policy" and that he should not become commissioner general.
Nassir noted the Jubilee government will fall just like the Roman Empire died.
"Matiang'i who acted on a directive from someone, should know he will not hold that office forever. One day he will be held accountable," he said.
The MP further said police seemed hesitant to breakup the demonstration but swung into action after orders.
"Police should know they need not pass the buck. On Sunday we will tell them, if they think teargas is the solution, Kenyans have a better solution than that," he said.
The rally will be first after the Supreme Court overturned President Uhuru Kenyatta's win citing massive irregularities and illegalities.
Nassir said Jubilee is using the thorax to undermine democracy.
"Kenya will not be run like that," he said.
More on protest: Police teargas defiant Mombasa protesters, leaders upset
Jomvu MP Badi Twalib said no businesses have been affected in Mombasa so Matiang'i's reasoning does not hold.
The CS said the economy is crumbling so mass action must be put to a halt.
Senator Mohammed Faki said police did not follow the book before disrupting the protests.
"They were supposed to give a warning and cite reasons. If protesters would have been adamant, they [they would have had the right to] fire teargas. But the inverse happened," he said.
He added IEBC has not heeded their demands for the election except for the opening of servers.
"It's too late for this," he said.
Mombasa deputy governor William Kingi said the mass action will continue.
"The constitution allows us [to picket]. We can't go to the poll before the IEBC is reformed."