Congress leader Priyanka Gandhi said that Bordoloi's resignation was unfortunate and added that differences over ticket allocation may have led to the decision.
The IUML's first list for the Kerala polls featured a major shift for senior leader PK Kunhalikutty, who will contest from the Malappuram constituency.
Congress leader Shashi Tharoor further warned that the region's instability was affecting the world, specifically noting disruptions to essential supply chains.