Kenya Kwanza has now claimed that Azimio should withdraw Pokot South MP David Pkosing if they are to pull out Eldas MP Adan Keynan.
Speaking at the United Democratic Alliance offices, National Assembly Majority Whip Silvanus Osoro said Pkosing is a member of the Kenya Union party which on Tuesday signed a post-election agreement with Kenya Kwanza.
"As you say we withdrawal Keynan, then you should also drop Pkosing," he said.
"Longangapuo, the KUP party leader is here and it should go to Azimio that Pkosing is a member of Kenya Kwanza."
Azimio has asked Kenya Kwanza to drop Keynan, saying he belongs to the Jubilee party which is a member of the coalition.
But Osoro said the move by KUP to formally sign coalition instruments with Kenya Kwanza now shows clearly that the party is working with the government
"Until today, the KUP has been a member of Kenya Kwanza by association but from now it is legally a member of Kenya Kwanza," Osoro said.
On his part, KUP party leader John Longangapuo said the party will now continue working together both in Parliament and outside Parliament.
He said the party will now work with the Kenya Kwanza in the bipartisan talks in Parliament.
"Our journey with Azimio ended after the last election and after three months we are allowed to file for divorce under the law," he said.
"Our voice is now in the national assembly and if there are any talks then they should be taken to MPs."