A central committee meeting of the party held at Chairman Kamal Thapa's residence at Bishalnagar had reached the conclusion to stay away from the remaining process of the CA.
With the RPP-N shunning the process, the numbers of political parties quitting the CA deliberations have reached 11 with 82 lawmakers, including one independent CA member.
All major Madhesh-based political parties including Federal Socialist Party Nepal and Madhesh Peoples Right Forum Democratic - the fifth and sixth largest parties in the CA respectively - have already boycotted the process.
Rastriya Prajatantra Party Nepal (RPP-N), the fourth largest party in the Constituent Assembly (CA), has decided to boycott the process from Wednesday.
