Mr Farah Maalim alleged that Mr Duale was not validly elected as the poll was marred by massive irregularities.
Outspoken Nandi Hills Jubilee Party MP Alfred Keter’s election has been challenged in the Eldoret High Court.
In Nairobi, Starehe MP Charles Njagua Kanyi’s election is being questioned by a loser, Stephen Mbogo of ODM.
Former National Assembly Deputy Speaker Farah Maalim has filed a petition challenging the re-election of Aden Duale as Garissa Township MP.
Mr Maalim is seeking to overturn the National Assembly majority leader’s win on the grounds that his election was flawed.
He alleged that Mr Duale was not validly elected as the poll was marred by massive irregularities.
Mr Maalim wants the court to order the Independent Electoral and Boundaries Commission to produce all voting material including voter registers, counterfoils used for all polling stations, electronic devices, and equipment used during the polls within 48 hours.
At the same time, outspoken Nandi Hills Jubilee Party MP Alfred Keter’s election has been challenged in the Eldoret High Court.
The petition has been filed by his main challenger in the elections, Benard Kitur, who was an independent candidate.
Speaking to journalists outside the High Court, Mr Kitur said he had evidence that would overturn the victory of Mr Keter, who won a second term in the August polls.