Presidential debate: George Wajackoyah arrives at CUEA, leaves minutes later

But sources told The Standard that after consultations, Wajackoyah was informed that the rules of the debate cannot be changed.

His competitor David Mwaure has also arrived for the debate, in the company of his running mate Ruth Mucheru Mutua.

Mwaure says he is prepared for a faceoff and hopes he will not be debating alone.

"I am prepared to conceive Kenyans why I am best suited for president. I hope to meet my competitor," Mwaure said just outside the CUEA auditorium.

Mwaure is scheduled to debate against Wajackoyah in the first tier of the debate, set to begin at 5.30 pm to 7.00 pm.

The second tier is expected to pit Azimio la Umoja Coalition presidential candidate Raila Odinga against United Democratic Alliance's William Ruto.

Raila has however said he will not be attending today's debate, saying he can't share a stage with a candidate whom he accuses of having questionable integrity.

Additional reporting by Winfrey Owino.