The September 27, 2018 supplementary governorship election which held in seven polling units Osun State has been declared illegal by Governorship election petition tribunal which sat in Abuja.
According to the tribunal, the supplementary election resulted from an illegal cancellation of the results in the seven polling units during the September 22, 2018 main election .
It also ruled that the Returning Officer who cancelled the results was not in the right authority to do so .
The ruling came after the Peoples Democratic Party and its governorship candidate , Ademola Adeleke, filed the petition urging the tribunal to declare Adeleke winner for polling the highest lawful votes.