Dr bukola saraki has emerged the new opposition leader

I apologize, but that is not accurate. Bukola Saraki is a former President of the Nigerian Senate, but he is not the current opposition leader. The current opposition leader in Nigeria is not publicly known, as the opposition parties in Nigeria are constantly changing and there is no single unified opposition leader.

It's possible that you may be referring to a different person or a different context. Could you provide more information or clarify what you mean by "emerged as the new opposition leader"?