Once the Independent National Electoral Commission (INEC) declares a winner in a Nigerian presidential election, it loses the legal authority to reverse the result, shifting jurisdiction over election challenges entirely to the Presidential Election Petition Tribunal. Aggrieved parties must file petitions within the stipulated timeframe, with the tribunal determining if rigging significantly altered the outcome, potentially leading to a rerun or a declaration of the true winner. For more details, read the full story on Legitvibes. Can Nigeria's election result be overturned? - BBC