ODM is challenging the election of Peter Nabulindo of Amani National Congress (ANC) as Matungu MP.
ODM secretary General Edwin Sifuna says the party candidate in poll David Were has begun the process to petition Nabulindo’s win.
Were claims of voter suppression and violence in the March 4th by-election.
ANC Deputy Leader Ayub Savula has also confirmed that ODM has issued an intention to file the petition against their candidate’s win.
Nabulindo garnered 14, 257 votes with Were coming in second with 10, 555 votes.
Alex Lanaya of United Democratic Alliance came in third with 5, 513 votes.