The Left parties which had rejoiced at the defeat of Congress in Lok Sabha elections were now repenting, he said.
Left parties' "blind opposition" to Congress party contributed to their rout in the Parliament election, he added.
"We do not consider the people as our enemy for the party's defeat," he said, adding "We will remain with the people and correct our shortcomings and move forward that is the tradition of the party."
AICC General Secretary Mukul Vasnik in his speech lauded the Congress party's work in the state. Others who spoke included Sudheeran and Kerala Home Minister Ramesh Chennithala.