BJP has fielded B Shivalingaiah as its candidate. C S Hanumanthappa is Aam Aadmi Party's candidate.
Puttaraju is banking on traditional voters of JDS with him and his party seeking votes for a regional party to get justice to local farmers over the Cauvery water issue with Tamil Nadu.
Puttaraju has also promised to speak in Kannada inside Parliament, if elected.
Though not having much presence in Mandya, Shivalingaiah, Vice President of the influential State Vokkaligara Sangha, can garner significant vote share for himself banking on position within the community body and Modi's name.
AAP which is making its debut in the electoral politics of the state has fielded renowned cardio-thoracic surgeon Hanumanthappa.