• Kalonzo had earlier said that he will not attend the interview but changed his mind after Moi stepped down.
• Kiyui Governor Charity Ngilu and Agriculture Cabinet Secretary Peter Munya will also face the panel today.
Individuals eyeing the running mate position in Azimio have arrived at Nairobi's Serena Hotel for the interviews.
Wiper Party leader Kalonzo Musyoka is among the candidates set to face the interview panel that is set to decide Raila Odinga's running mate.
Musyoka had earlier said that he would not attend the interviews but changed his mind after KANU's Gideon Moi stepped down from contesting for the seat.
KANU boss Gideon Moi, who was expected to be interviewed dropped out reiterating his endorsement for Kalonzo.
"While he is suitable, capable to be the running mate of Raila Odinga but on this one, he is not going to appear having endorsed Kalonzo Musyoka," KANU Secretary for Political Affairs Fredrick Okango said.
Former Gatanga MP Peter Kenneth will be the second nominee to face the panel on day two of the interviews.
The Committee is expected to conclude the interviews today and submit three names to Raila before Tuesday at midnight.
Also to face the panel today are Kitui Governor Charity Ngilu, former MP Stephen Tarus and Agriculture Cabinet Secretary Peter Munya.