Migori residents woke up as early as 5am to vote in the senatorial by-election occasioned by the death of Ben Oluoch Okello in June this year.
Voting started at 6am and some of the electorates expressed their joy of having exercised their democratic right in a peaceful environment.
Security has been beefed in an outside the polling centres with officers sending away idlers.
Each of the 826 polling stations in the county is being manned by at least two police officers.
Nyanza Regional police boss Leonard Katana said his officers will make sure order and peace is maintained during the by-election.
“We have mapped out the hotspots and our deployment in those areas will be different,” he said.
Some of the officers have been brought in from the neighbouring counties to assist in security surveillance.
Migori has been notorious for violence during campaigns and elections although minimal fracas was reported in this mini poll campaigns.
IEBC commissioner, Prof Abdi Guliye said all had kicked off smoothly and they hope that the exercise will end well.
The six candidates that are battling it out are Mr Ochillo Ayacko (Orange Democratic Movement), Mr Eddy Oketh (Federal Party of Kenya), Mr Peter Jobando (Green Congress Party), Mr Solomon Hodo Rugaria (People’s Democratic Party), Mr Samwel Otieno (independent) and mr Dickson Ogolla (independent).