Former Youth Councillor Reagan Ssembajjwe is contesting on the National Unity Platform (NUP) ticket against National Resistance Movement (NRM) candidate Fred Musisi, 70, who has led the village for years.
The contest has attracted widespread attention after Musisi publicly rejected Ssembajjwe's claim that he is his biological son.
Ssembajjwe says Bubiro needs new leadership, accusing the incumbent of poor governance and alleging that controversial land transactions carried out during Musisi's tenure have fuelled disputes among residents.
If elected, he says, he will prioritise transparency and accountability in the management of village affairs.
He also criticises the current administration for failing to acquire basic community assets such as tents, saucepans and plates for public functions. Ssembajjwe further argues that village affairs have become personalised, claiming official meetings continue to be held at the chairperson's home instead of a neutral public office.
Musisi has dismissed the allegations as politically motivated.
The veteran village leader also disputed Ssembajjwe's assertion that they are father and son.
He said the challenger came to his home as a casual labourer at the age of 10 and was later raised under his care, but insisted he is not his biological son.
Musisi also rejected claims that he has led Bubiro Village for more than 40 years, saying he has served as LC I chairperson for only 20 years.
The incumbent further questioned his rival's eligibility to contest the seat, alleging that Ssembajjwe is not a resident of Bubiro Village.
The race has reportedly reshaped the local political landscape, with several aspirants withdrawing from the contest and endorsing Ssembajjwe in an effort to consolidate opposition support.
According to NUP officials, the decision followed mediation by Nakifuma chief mobiliser Bernard Ssempaka, who urged party members to unite behind a single candidate to avoid splitting the opposition vote.
The claims and counterclaims made by both candidates could not be independently verified.
As campaigning intensifies, the Bubiro LC I race has emerged as one of Mukono District's most closely watched grassroots elections, pitting questions of leadership, family ties and political change at the centre of the contest.