Jayarajan's wife Yamuna is the secretary of Kuthuparamba Cooperative Rural Bank, and they have two sons.

He went on to hold the position until March 2019, when, after being named the LDF candidate from Vatakara for the 2019 Indian General Elections, he was replaced by M.V.

Granting conditional bail, the court asked he to furnish a security of ₹ 25,000, two sureties and directed him not to try to influence the witnesses in the case[14][15] P. Jayarajan was first elected to the Eleventh Kerala Legislative Assembly from Koothuparamba constituency in 2001.

He continued to win the seat in 2006, when fresh elections were held to Twelfth Kerala Legislative Assembly.

[1] Jayarajan was attacked by RSS on 25 August 1999 at his house at Kathiroor owing to political animosity.

It has subsequently expanded its spheres of influence with activities like kanivu, which provides training and jobs to the differently abled and unarvu, which aims at creating educational awareness among children in tribal hamlets.