Radhakrishnan is a Communist Party of India (Marxist) politician from Thrissur and a former member of the Kerala Legislative Assembly from Chelakkara Assembly Constituency.
He was the minister of Youth Affairs & SC-ST Affairs in the third E.
K.
Nayanar ministry from 1996 to 2001 and also the speaker of Kerala legislative assembly from 2006 to 2011.
He became active in politics from a very humble and poor background rising to the rank of a minister in a short span of time.