Kipipiri MP Amos Kimunya on Thursday found himself in trouble after a group of young people accused him of trying to influence voters in the Kiambaa by-election.
The locals confronted the majority leader at Kimuga polling station and demanded that he leaves the area.
Mr Kimunya said he was there as a Jubilee agent and that rumours of voter bribery are mere allegations.
Police officers moved quickly at the polling station and restored calmness.
The Kiambaa MP seat fell vacant after legislator Paul Koinange succumbed to Covid-19 complications in March this year.
The Kiambaa MP race has attracted eight candidates: Kariri Njama (Jubilee Party), Joe Njuguna Wanjiku (UDA), Evans Gichia (Peoples Party of Kenya), Willie Mbugua (Independent), Koromo Muchugi (Federal Party Kenya), David Mugo (Independent), Wanjiru Muthaka (PNU) and Njoroge Ngugi (TND Party).
Mr Njama is a businessman who runs a security supply and consultancy firm while Mr Wanjiku is also a businessman with interests in car importation.
Mr Gichia is an accountant turned businessman who owns a local college, Printax Computer College, as well as a driving school.
Mr Mbugua, who is vying as an independent candidate, is also a businessman while Mr Muchugi is a former military officer.
Mr Mugo who is vying as an independent candidate is a boda boda rider, Ms Muthaka is a medical doctor and Mr Ngugi is a retired educator.