The 68-year old former Chief Minister is seeking re-election from his home turf Puthupally Assembly constituency in Kottayam district for the eighth time in a row.
The Congress leader filed papers before Block Development Officer at Pallickelthodu in Pampadi. CPI(M)'s Women's Association leader Suja Susan George is the LDF candidate against Chandy.
Communist Marxist Party leader M V Raghavan filed papers from Nemmara segment in Palakkad district. Sitting MLA V Chenthamarakshan CPI(M) is the LDF candidate against Raghavan.