The Congress and ally HD Kumaraswamy started negotiations for the 28 Lok Sabha seats in Karnataka today. The negotiations are expected to be tough, although Mr Kumaraswamy's father, HD Deve Gowda has assured that his party would not be rigid about its demand. Mr Kumaraswamy wants 12 of Karnataka's 28 seats -- proportional to the seats won by the two parties in last year's assembly election in the state.