Preliminary results show the incumbent, President Uhuru Kenyatta, leading by nine percentage points with almost all the votes counted.
At this crucial moment, he and his National Super Alliance (NASA) must also step up to this call for transparency: if they can not swiftly substantiate their allegations that the election was hacked and "most" of the official results already published by the IEBC are false, they should concede defeat and thereby contribute to strengthening Kenya's democracy.
"I reach out to you, I reach out to all your supporters", Kenyatta said in comments directed to opposition leader Raila Odinga.
Wafula Chebukati, chairman of the electoral commission, said a hacking attempt had failed to manipulate the outcome of the vote.
The dispute led to a spate of ethnic violence that led to the death of 1,200 people and displaced some 600,000.
"I therefore declare Hon".
As Kenyatta held a strong lead in provisional results with 96 percent of all polling stations counted, the election commission defended the voting system as secure, saying there were "no interferences before, during and after" Tuesday's election.
Odinga contested and lost Kenya's last two elections, which he also said were rigged.
"The judicial process, the judicial system of Kenya and the election laws themselves make full and adequate provision for accountability in this election", Kerry said. "We all belong to Kenya. At the end of the day we shall do an audit and those questions will be answered", he said.
He said the opposition's own informal vote tally gave him 8.1 million votes compared with 7.2 million for Kenyatta.
In an announcement by the Independent Electoral and Boundaries Commission (IEBC), Kenyatta clinched a (55.5%) of the vote. As Eyder noted, this election marks something of a culmination for Kenyatta and Odinga, whose rivalry dates back to the 1960s, when their fathers - who once served as president and vice president themselves - had a bitter falling out.
"The issues we raised have not been adequately addressed", said Musalia Mudavadi, a member of the coalition representing opposition candidate Raila Odinga.
James Orengo, another senior NASA official, called the election process a "charade" and a "disaster".
Angry protests had erupted in opposition strongholds in Nairobi and the western city of Kisumu, an opposition stronghold on Wednesday, with demonstrators burning tyres in the streets. Without having all these forms to present to the public, the IEBC has had to admit that the results it has been announcing since Wednesay are unofficial.
On Friday morning, in anticipation of the official results being announced, Odinga's supporters staged protest marches in some areas, including burning tires in some of Nairobi's largest slums.
"We have urged people to remain calm as we delve deeper into this matter". But it has been battered by terrorist attacks, including one on an upscale Nairobi mall that killed 48 people in 2013, and another in 2015 at a northern university, which left 148 dead.