From 15 in Patna, 26 opposition parties are expected to attend the two-day brainstorming session in Bengaluru starting Monday. As per sources, the united opposition is likely to begin working on a common minimum programme and announce a joint agitational plan against the BJP-led NDA for the 2024 Lok Sabha Elections. New parties joining the front are expected to include MDMK, KDMK, VCK, RSP, Forward Bloc, IUML, Kerala Congress (Joseph) and Kerala Congress (Mani).