The Supreme Court on Tuesday kicked out the National Super Alliance and Jubilee Party in the petitions, challenging the election of President Uhuru Kenyatta.
The judges also suspended from the hearing a case filed by Institute for Democratic Governance (IDG) against Nasa leaders Raila Odinga, Kalonzo Musyoka and Musalia Mudavadi because they said it was not time-bound.
The six judges also expunged from the court records the controversial internal memos obtained from Independent Electoral and Boundaries Commission (IEBC).
Attorney General Githu Muigai was admitted as interested party but his application as amicus curiae, friend of the court, was rejected.
In their determination last evening after the pre-trial hearing, judges headed by Chief Justice David Maraga directed that Nasa cannot be retained as a respondent in the matter and parties to the case were restrained from making any references to Nasa leadership.
They also admitted Dr Ekuru Aukot as an interested party saying that his application meets the criteria.
On the IEBC memos, which turned to be a quick win for Mr Kenyatta, lawyer Mellisa Ng’ania said the documents were obtained illegally and should not form part of the record.