ODM Candidate Pavel Oimeke has cliched the Bonchari seat in Kisii county.
Oimeke garnered 8,049 votes in the hotly contested by election conducted on Tuesday.
Jubilee candidate Zebedee Opore emerged second with 7,279 votes followed by Teresa Bitutu of UDA with 6,964 votes.
The Bonchari by election was marred by voter bribery that saw a few people arrested.
Some government officials were also accused of interfering with the elections.
The ODM Party thanked its campaign team leaders for working with Oimeke and ensuring his win.
“To all our supporters, elected leaders particularly MCAs both from Kisii & neighboring counties who served as agents, our youths who were vigilant at all times during the exercise, volunteers & the family of our candidate Pavel OIMEKE, we thank you all for enabling this victory,” tweeted the party.