Aminu Shagari, house of representatives member from the Peoples Democratic Party (PDP), in Sokoto State, said he has reduced the number of witnesses he intends to invite to tribunal from 95 to 46.
The tribunal is hearing the petition against the victory of the All Progressive Congress (APC) in the Shagari/Yabo Federal Constituency.
Shagari, who is a son of late President, Shehu Shagari, is challenging the election of Abubakar Umar-Yabo, before the state Election Petition Tribunal.
He is challenging the return of Umar-Yabo, on the grounds that the APC candidate did not score the highest number of lawful votes cast at the polls.
Shagari also alleged that the election was marred by electoral irregularities, which according to him, was not in compliance with Electoral ACT ( 2010 as Amended).
Kelechi Ogbonna, counsel to Shagari and the PDP, who held brief for Mahmud Magaji, a senior advocate, told the tribunal that the number of witnesses had been reduced from 95 to 49.
Also, counsel to Umar-Yabo and the APC, Bashir Jodi and Abdulhamid Zubair, said they intend to call one witness each.
Abdulkarim Ibrahim, counsel to the Independent National Electoral Commission (INEC), said the electoral commission would rely on the witness testimony of two people.
The Tribunal Chairman, Justice Peter Akhihiero, ordered all parties to file their issues for determination on Friday, for continuation of pre-hearing.