There was a standoff at the Migori county tallying centre after ODM supporters engaged in a shouting match with IEBC officials demanding that by-election results be displayed.
Before the chaotic scene, ODM candidate Ochilo Ayako was leading followed by Eddy Oketch of Federal Party of Kenya.
Police had to protect county returning officer Ruth Kulundu from angry agents and youths.
IEBC commissioner Abdi Gulaye said no results will be read, citing that there is no mischief.
"Please let us sit and wait for the results to come, we will announce after we get all forms," Gulaye said.
Voting closed at 5 pm in the 826 polling stations. The county has about 388,000 registered voters.
The by-election was however characterised by low voter turn out.
Ochilo's
supporters started celebrations at around 9 oclock when results from Kuria region, where they feared they were poised to get fewer votes showed them ahead.
Hooting their motorbikes and vehicles, the supporters thronged Migori, Awendo and Rongo town streets singing praises to Ayacko and ODM leader Raila Odinga.
Among the centres that recorded very low turnout was Rapogi Primary School in Uriri constituency where governor Okoth Obado would have cast his vote.
Obado is in custody in relation to a murder case of Rongo University student Sharon Otieno.
The by-election
coincided with his appearance in court.
Villagers at his rural home were glued to their television sets
following court proceedings in Nairobi.
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The by-election
was
occasioned by the death of Senator Ben Oluoch Okello in June 2018.
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The brutal murder of Rongo University student Sharon Otieno played a centre stage during the campaigns.
Ayacko lost to Obado in the race for governor during the August 8, 2017, General Election.
ODM gave Ayacko a direct ticket to vie for the Senate seat, a move that was strongly opposed by Obado.
Politicians and social media users had branded the people opposed to the ODM party position as "Team Kodera Forest".
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