The Delta state national assembly election petitions tribunal sitting in the capital, Asaba, has nullified the election of James Manager, lawmaker representing Delta south senatorial district.
The three-man panel led by E.I. Ngene gave the ruling on Saturday, ordering fresh election for the district.
The Independent National Electoral Commission (INEC) had declared Manager, who ran on the platform of the Peoples Democratic Party (PDP) winner of the election but Emmanuel Uduaghan, his All Progressives Congress (APC) rival, challenged his victory.
Through Thomson Okpoko, his counsel, Uduaghan told the tribunal that the February 23 election in the district was marred by massive rigging.
He had asked the panel to cancel the election and order a fresh election.
In a ruling Saturday, Ngene annulled the election and asked INEC to conduct a fresh one within 90 days.