President Uhuru Kenyatta is asking the country to avoid the kind of violence that followed the 2007 election, when more than 1,000 people were killed. Then, on Thursday, he said that he had won 8.04 million votes, to 7.75 million votes for Kenyatta.
The President, in a nationally broadcast speech, said he and his opponent were not enemies.
"It looks like the president (and) the deputy president knew all along what the commission was going to do", coalition agent James Orengo said. "As with any competition, there shall always be winners and there shall be losers".
"I reach out to you, I reach out to your supporters".
Kenyatta said he wanted to work with the opposition National Super Alliance (NASA).
"We shall work together, we shall partner together, we shall grow together so we can build this great nation", Kenyatta said.
President Kenyatta later told journalists that his first assignment would be uniting Kenyans after a long campaign.
The President told his countrymen there was no need for violence.
Global observers on Thursday praised the handling of Kenya's presidential election, with the European Union mission saying it had seen no sign of manipulation despite opposition complaints and scattered protests.
Election officials have been painstakingly trying to confirm their provisional results showing Kenyatta in the lead with checks of documents from polling stations nationwide.
Marietje Schaake, head of the mission, said the European Union would provide an analysis of the tallying process in a later report. "Since our issues have not been addressed, we will not be party to the process they are about to make". They stand by their claims that the electoral commission's computer networks were hacked.
Kenyans on Friday awaited the official results of Tuesday's disputed election as hundreds of riot police patrolled Nairobi's central business district and opposition supporters burned tires and blocked roads in several areas.
On Thursday, Chebukati said tampering with the election system "was attempted but did not succeed", without elaborating further.
All of the worldwide election observer missions who monitored the balloting agreed that the process was transparent.
The victor of the presidential election must receive 50 percent of all votes, and 25 percent or more of votes in at least 25 of Kenya's 47 counties.
He urged Kenyans to move past the electioneering period and commence nation building. Police helicopters are also hovering above the slum, the largest in all of East Africa.
At an global conference center, ruling party supporters sang "Today is our day, God is good" as the president arrived to address them.
It's complicated, and the country is abuzz with talk about "Form 34A" and "Form 34B" - seen as crucial to verify the electronic results Mr Odinga is disputing. Kisumu's main hospital was treating four people brought in overnight with gun-shot wounds and six who had been beaten by police, hospital records showed.
The good holding of the general election of Tuesday has been unanimously acclaimed by the global community.