Congress party has hit out at RPN Singh after he jumped the ship and joined BJP in the national capital today. The grand old party branded Singh a coward, saying it wishes all those a good luck who are deserting the Congress. Singh, a long-time Rahul Gandhi aide, jolted the Congress party today after he posted his resignation on Twitter and announced a new beginning of his political career. He joined BJP in the national capital in presence of union ministers and senior party leaders. Watch this video for more.