Duncan Mbui — also known by his political alias “Kivui Kivui” — is a Kenyan politician and current Embu County MCA for Evurore Ward. He is contesting the Mbeere North parliamentary seat in the 2025 by-elections. Initially a candidate under the Democracy for the Citizens Party (DCP), Mbui later left the party and declared his bid independent, later joining Chama Cha Kazi (CCK). With deep local roots and a reputation for grassroots mobilization, Mbui remains a prominent figure to watch in Mbeere North politics.