Minority leader Francis Nyenze has endorsed the NASA line-up terming it the only way to ensure Wiper and the Opposition remain united.
ODM leader Raila Odinga will vie for the presidency with Wiper leader Kalonzo Musyoka as his running mate.
Nyenze said last week that Kambas had been given a raw deal but noted on Wednesday that his negotiation skills and tough stand ensured a strong line-up.
"Many people had [misunderstood] my stand...I was acting on behalf of the party," he told the media after a meeting with Kalonzo.
He thanked Kalonzo for trusting him as his representative in negotiations by the National Super Alliance.
Kalonzo defended the minority leader once again saying he was acting in his capacity as a member of the party.
"Honorable Nyenze expresses belief. He has received a lot of bad press due to saying what he believes in," said the vice president candidate.
"I don't want a gentleman I know so much to be besmirched. The name Nyenze doesn't mean he is a cockroach. I am here to defend him. I want to thank him for standing with me."
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NASA principals now number five - Bomet Governor Isaac Rutto recently joined Raila, Kalonzo, Musalia Mudavadi (ANC) and Moses Wetang'ula of Ford Kenya.
Under their arrangement, Mudavadi is proposed to take up a position that will be created after the election, and only in the event of victory, known as Premier Cabinet Secretary.
The position is touted to be influential, in charge of government coordination and supervision of all ministries.
Under the Premier CS will be two powerful deputies of equal rank. One will oversee the State Department of Public Service and the other will be in charge of the State Department of Devolution and Planning.
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