The answer is no. By the provision of Section 141 of the Electoral Act, 2010, the National Assembly did by legislation set aside the decision of the famous Supreme Court decision in Amaechi V. INEC case. The implication of this section became again that it is the candidate who stands for an election that wins or loses, not his political party such that an aspirant who never really contested the election takes the victory as being the victory of the party.
In the case of CPC V. OGBODU (2013) 18 NWLR (Pt. 1385) 67 at 119-120, it was held thus;
“In other words parties do not contest, win or lose election directly, they do so by the candidates they sponsored and before a person can be returned as elected by a tribunal or court, that person must have fully participated in all the stages of the election, starting from nomination to the actual voting”
The implication of this verdict of the law, is that a party who after the election proves that he was the validly nominated candidate for the party but was wrongfully substituted will not stand the chance of being declared as winner by the tribunal. He can only be assuaged vide damages. This new position of the law is a total turn away from the position back in the case of AMAECHI V. INEC.
It would appear that the legislators were not exactly satisfied with that 2010 position. The extant Electoral Act, 2022 presents another and different scenario. Under Section 136 of the Electoral Act, 2022 the position is that if the tribunal or court finds and declares that the candidate declared the winner of an election was not validly elected on any ground it shall nullify the election and direct INEC to conduct a fresh election for that position not later than 90 days - where no appeal is filed against that decision or where appealed against is unsuccessful.
So, the case of Amaechi V. INEC (& Omehia) where the candidate that contested and was declared as elected was not the person validly nominated by his party to contest the election would have, under Section 136(1) of the Electoral Act, 2022 resulted in the total nullification of the election, and a fresh election organized within 90 days of the Supreme Court judgment for all the political parties that participated in that Rivers State Governorship election (and not Amaechi, who was wrongly dropped by his party and prevented from participating in the election, being declared winner on the ground that it was his party that owns the victory, and same should be returned to the party through the rightful candidate).
The position will be different where the tribunal or court finds and declares that candidate who scored the highest number of votes was not qualified to contest that election, the candidate with the second highest number of votes, of whichever party, should be declared the winner of the election, in so far as that candidate still remains a member of his party (and has not defected to another party different from the one) on whose platform he contested that election.
If the reason for nullifying the election of the person returned as duly elected in that election is that he did not actually validly score majority of the votes cast at that election, the tribunal shall declare the candidate that scored the highest number of valid votes at the election as the winner of that election.