Petitioner Francis Potape called a total of 27 witnesses to give evidence in court.
The Electoral Commission opened its case on Friday in the petition trial over the Hela Regional Seat, filed by Francis Potape.
Provincial returning officer for Hela, John Tipa, was called to the stand to give evidence in relation to statements he filed.
Tipa will return to the stand on Monday. The Electoral Commission intends to call two more witnesses before Undialu can call his witnesses.
The petitioner had a total of 59 witnesses, however only 27 were called to the stand.