Boniface Mwinde, 25, is a bus conductor and Kenyatta supporter who went out to celebrate at three in the morning. "I feel very, very good," he said, wrapping himself in a red flag of Kenyatta's party. "I've been waiting to go back to work."
Businesses and schools were closed across Nairobi during the long wait.
A Kenyatta presidency has worried Western governments, which may have to limit diplomatic contact with Kenya due to the international criminal court charges against him. Kenya is an ally of the West in combating terror in Africa, and Nairobi, the capital, is home to a UN headquarters.
John Kerry, the US Secretary of State, released a statement after the election saying America would remain "a strong friend and ally of the Kenyan people", but outgoing Assistant Secretary of State for Africa Johnnie Carson had previously warned of "consequences" for Kenya's Government with Kenyatta in office.
In his acceptance speech, Kenyatta said that he would work with the ICC prosecution. "To the nations of the world I give you my assurance that ... we will continue to co-operate with all nations and institutions," he said. "However," he added, "we also expect that the international community will respect the sovereignty and the democratic rule of Kenya."
-Observer