The statement said: "President Clinton appreciates General Abdulsalami Abubakar and the Nigerian National Peace Committee's invitation to travel to Nigeria".
President Muhammadu Buhari has expressed sadness over the tragic death of some members of the All Progressives Congress (APC) in a stampede at the presidential campaign rally in Port Harcourt, Rivers, on Tuesday.
Secretary-General of the Commonwealth, Baroness Patricia Scotland was also billed to attend the event.
President Buhari assured the government and the people of Rivers State as well as the affected families of the support and prayers of the federal government during this hard time.
"In any case, let it be known to President Buhari and the APC that the PDP and the people's candidate will definitely hold our presidential mega rally in Abuja irrespective of any further encumbrance they may attempt to foist".
Compared to 2015, worldwide interest in Nigeria's election has been muted as the U.S. administration focuses on domestic issues and Britain wrestles with its impending exit from the EU.
McConnell: We will vote on the 'Green New Deal'
The resolution calls for the United States to eliminate additional emissions of "planet-warming" carbon dioxide by 2030. It's unclear exactly what kind of measure McConnell plans to bring up for a vote in the Senate.
"He looks forward to talking to both candidates and General Abubakar this week".
It is expected to be a keenly contested election.
The NPC in an earlier statement announcing Clinton's visit said it reached out to him and others to ensure peaceful elections and a non-violent transfer of power in the West African nation.
"The NPC has engaged the Independent National Electoral Commission (INEC), security services, 91 registered parties, the media and civil society organisations".
The planned trip was facilitated by the Kofi Annan Foundation and the National Peace Committee.
"This signing is aimed towards committing stakeholders to accepting the outcome of the vote, as long as it is announced by INEC, the body empowered by law and is adjudged to be free, fair and credible".