It is one of five constituencies in Vihiga County, in the former Western Province.
The constituency was represented by Kenneth Marende of the Orange Democratic Movement (ODM) before he was elected as the Speaker of the National Assembly in January 2008.
Wilbur Ottichilo became the representative in a by-election in 2008, serving for 10 years until 2017.
In 2013 the constituency was split into two, Emuhaya and Luanda.
It had a population of 97,141 people in the 2019 census.