The JDS, BJP and KJP of former Chief Minister B S Yeddyurappa had struck an electoral pact. BJP fielded two candidates, including former Chief Minister Jagadish Shettar's brother Pradeep Shettar, and the KJP one. JDS supported those three candidates.
Polling was held in Mysore-Chamarajanagar, Chitradurga-Davanagere, and Haveri-Dharwad-Gadag segments, following the resignations of K R Mallikarjunappa, G H Tippa Reddy and Shivaraj Sajjan, respectively.