"We are not worried by the recent results of the Assembly elections. We will work harder to strengthen the party in the state and live up to the expectations of our leaders Sonia Gandhi and Rahul Gandhi," Dubey said here.
"In fact, we have taken the results as a challenge to put up a better show in the year of elections -- Lok Sabha and Assembly polls -- in Jharkhand," he added.
Earlier in the day, the Congress president approved the list of PCC office bearers.