Professor Tunji Ogunyemi, an economic historian and public affairs analyst, has discussed the potential consequences of reinstating petroleum subsidy. He believes that 15 northern states would collapse if the subsidy is returned. The professor also commented on a presidential candidate's position on subsidy, describing it as politics and playing to the gallery.

Further details on his statements are available from a podcast, Open Forum 360, where he made these points. Professor Ogunyemi is from Obafemi Awolowo University and has expertise in economics and law.

His comments suggest a strong stance against reversing the current subsidy regime, citing potentially calamitous outcomes.