"We are confident we are going to win. Raila Odinga leadership is going to transform Kenya to a second world country and eventually a first world," he said.
There are few noticeable ideological differences between the two frontrunners but financial circles lean towards Kibaki, under whose tenure Kenya's economy -- the region's largest -- has expanded by an average of five percent a year.
While Odinga has cast himself as the candidate of change and the champion of the poor, Kibaki has advocated continuity despite being criticised for failing to tackle corruption and deliver constitutional reforms.
Kalonzo Musyoka, a 54-year-old born again Christian who was in Odinga's party until a few months ago, is the third man in the race, while six other candidates are expected to record negligeable scores.
Kenyans are also electing 210 members of parliament and more than 2,000 local councillors, with some observers predicting that increasingly demanding voters could vote out up to 70 percent of sitting MPs.
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