NAIROBI, KENYA - OCTOBER 26: A National Super Alliance (NASA) protestor runs from a tear gas canister in the Kibera slum on October 26, 2017 in Nairobi, Kenya. Protestors have Kibera boycotted the vote and are attempting to block polls during Kenya's controversial rerun election.  (Photo by Andrew Renneisen/Getty Images)
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NAIROBI, KENYA - OCTOBER 26: A National Super Alliance (NASA) protestor runs from a tear gas canister in the Kibera slum on October 26, 2017 in Nairobi, Kenya. Protestors have Kibera boycotted the vote and are attempting to block polls during Kenya's controversial rerun election. (Photo by Andrew Renneisen/Getty Images)
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Kenya's opposition alliance, National Super Alliance (NASA) presidential candidte, Raila Odinga arrives at Old-Kibera primary school polling centre to cast his ballots August 8, 2017 mobbed by his supporters in Nairobi. Kenyans began voting in general elections headlined by a too-close-to-call battle between incumbent Uhuru Kenyatta and his rival Raila Odinga that has sent tensions soaring in east Africa's richest economy. / AFP PHOTO / TONY KARUMBA (Photo credit should read TONY KARUMBA/AFP/Getty Images)
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Supporters of Kenyan presidential candidate Raila Odinga wave as he departs in a helicopter after addressing a rally held by his coalition party The National Super Alliance (NASA) in Kisumu on August 3, 2017. Raila Odinga, Kenya's veteran opposition leader and one-time prime minister, is taking his fourth run at the presidency in an election next week. The 72-year-old has been a mainstay of Kenyan politics since the 1980s but has never achieved his presidential ambition, his career emulating that of his father, Jaramogi Oginga Odinga, who led the opposition for three decades but never the country. / AFP PHOTO / FREDRIK LERNERYD (Photo credit should read FREDRIK LERNERYD/AFP/Getty Images)
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(CNN) —  

Official voter turnout figures in Kenya’s presidential election rerun will be released Sunday, the Independent Electoral and Boundaries Commission said.

The IEBC on Thursday released preliminary figures saying about 6.5 million registered voters cast ballots, but cautioned that figure was subject to change.

The two top sides competing for spots in the government on Saturday each gave vastly different turnout numbers.

The government of President Uhuru Kenyatta reported 7.5 million people voted. The opposition group, the National Super Alliance, reported that 3.5 million people cast ballots.

The voting authority has seven days to declare a winner, but a Kenyatta victory appears likely.

Kenya’s highest court nullified the first election – held in August and won by Kenyatta – over irregularities raised by veteran opposition leader Raila Odinga, paving the way for this week’s vote. Almost 80% of the 19.6 million registered voters took part in the prior polling.

Kenyatta is seeking a second five-year term. But in a surprise move, Odinga quit the race earlier this month, after his demands for procedural reform were not met.

Speaking to CNN on Friday, Odinga said that he was left with no choice but to withdraw from what he called a “pre-rigged election” that was “a waste of time” and resources.

He said the low voter turnout amounted to a “vote of no confidence” in the electoral process and that the opposition will now use all legal avenues available to put pressure on the government.

“We are going to use legal means, our constitution allows for picketing, for peaceful demonstrations and boycotts,” Odinga added.

A police official looks on as residents walk into a polling station the Kibera slum area of Nairobi.
TONY KARUMBA/AFP/Getty Images
A police official looks on as residents walk into a polling station the Kibera slum area of Nairobi.

Kenyan Secretary of Communications Manoah Esipisu said that low voter turnout doesn’t make an election illegitimate, and that Odinga “chose to stay out.”

“Kenyans have voted and have voted for the president,” Esipisu added.

Kenyan deputy president William Ruto said Kenyans had “exercised their legitimate, constitutional, and democratic mandate.”

“Shortly we will be having a declaration and finally a swearing-in in accordance with the constitution of Kenya,” he said. “So the opposition narrative was lost and defeated because it failed. There will be a final paper tally, maybe latest by tomorrow or tomorrow afternoon and when we get there the figures will speak for themselves.”

Odinga: Poll boycott reveals voter fatigue

Voting appeared peaceful in most of the country but a low turnout would suggest many of Odinga’s supporters acquiesced to his call for a boycott of the ballot.

The early turnout figure released by the electoral commission did not include several counties where voting was initially suspended until Saturday, before being indefinitely postponed, after skirmishes between demonstrators and police broke out. Some of the counties are areas are where opposition support is high.

“It is becoming risky for our officials so instead of pushing it, the best thing would be to postpone it until it is safe to do it,” Andrew Limo, a spokesman for the electoral board, told CNN on Friday.

Only elections in Fafi and Turkana Central constituencies went ahead on Saturday.

Limo said he did not know how this indefinite delay would impact the announcement of the presidential winner.

Odinga told CNN on Friday that his resistance movement is appealing to ordinary Kenyans who are tired of Kenyatta’s administration “discriminating against them on the basis of their ethnicity” and that he had suggested talks before the poll, only to be rejected.

Ethnic bonds are often stronger than national identity in Kenya, which has at least 40 ethnic groups. Odinga is a member of the Luo community, which some say has become increasingly marginalized in recent years.

Kenyatta hails from the country’s largest community, the Kikuyu. Mostly originating from Kenya’s central highlands, the Kikuyu have long been accused of wielding strong economic and political power in the country.

Related: How the Kenya election unraveled

At least six people died in violence linked to the runoff election, according to officials.

In a statement Friday, Kenya’s National Police Service spokesman George Kinoti confirmed one person was shot dead by police in Homa Bay county, while two others died from gunshot wounds in the western town of Kisumu.

The Red Cross said one person was killed during opposition demonstrations in Nairobi’s Mathare slum on Thursday. An eyewitness said the man was shot as police dispersed protesters.

The NGO said another man died after he was hit by a stray bullet during running battles between police and protesters in Bungoma county on Friday morning.

Saturday, Jaramogi Oginga Odinga hospital CEO Juliana Otieno said one person died in protests in Kisumu, an opposition stronghold.

Polling stations closed

Wafula Chebukati, the chairman of Kenya’s electoral board, said Friday that 5,319 polling stations out of more than 40,000 had not opened. He added that they had been prevented from opening by bad weather and “security” issues.

TONY KARUMBA/AFP/Getty Images
Police peer around a building after throwing tear gas at stone-throwing protesters in Kibera.
Andrew Renneisen/Getty Images Europe/Getty Images
Police peer around a building after throwing tear gas at stone-throwing protesters in Kibera.

Linus Kaikai, chairman of the Kenya Editors Guild, said that the opposition had proved to be too strong in its heartland.

“It’s very unlikely another try (at holding an election) will work at all because the clear message from that side of the country and the leadership of the opposition is they cannot take part in this exercise,” he added.

“They want the reforms they have demanded to be carried out in the IEBC, they basically want a different environment and a new general election altogether.”

The rerun revealed the deep divisions running through Kenya. Headlines splashing the front pages of local newspapers read: “One Kenya: Two Faces” and “The Big Divide.”

Many are questioning the legitimacy of the election, given how few people chose to head to the polls, but a Kenyatta spokesperson told CNN that just because people didn’t turn up to vote does not mean that they all back Odinga.

Observers will be paying close attention to how the situation unfolds in the coming days. As the largest economy in east Africa, any unrest could have ripple effects far beyond the nation of 47 million people.

Kenya’s Elections Observation Group said 1,773 field observers had been deployed to 215 of the 290 constituencies to monitor the voting process. It said personnel were not deployed to some counties “due to security concerns.”

In a statement it said: “There is need for urgent, inclusive dialogue led by Uhuru Kenyatta and Raila Odinga as soon as possible. This will not only address the political impasse but also start to pull Kenya back together to ensure political, economic and social inclusion and cohesion.”

Many view Kenya’s fate as a key indicator for stability in a region that includes the fledgling Somali government and politically tense Sudan and South Sudan.

Ongoing uncertainty has left residents of the east African economic powerhouse on edge.

After Kenyatta was declared the winner in the August vote, sporadic clashes erupted in some areas, leaving at least 24 people dead.

CNN’s Briana Duggan and Dominique van Heerden contributed to this story from Nairobi.