New Delhi, Sept. 29 -- As the Congress tries to rebrand itself as champions of social justice, the party's Uttar Pradesh unit has planned an outreach to caste groups in a bid to revive the party in one of India's toughest electoral battlefields. Starting from mid-October, the party unit will organize 13-15 conventions, each targeting a specific caste group such as Maurya, Kushwaha , Pasi and Nishad, Patel Lodhi, general secretary in charge of UP, Avinash Pandey told HT. To be sure, the Congress' revival in the largest electoral state is easier said than done. In the post-Mandal Commission era, Congress' traditional votebase has been eaten up by Samajwadi Party, Mayawati's BSP and the BJP. The party has not had a chief minister in UP since D...