The Congress and its Tamil Nadu ally DMK have not been able to finalise a seat-sharing deal for the April 6 election despite two rounds of talks. According to sources, the Congress's demand for contesting in 30 of the state's 234 assembly seats is unacceptable to its Dravidian ally. The MK Stalin-led party - which is the dominant partner in the alliance in the southern state - is not ready to concede more than 20 seats, leading to a stalemate.