After days of negotiation and uncertainty, the Congress and Raijor Dal finalised seat-sharing arrangements for the Assam assembly polls, and decided that the national party will leave 11 constituencies for the other one, and there will be a friendly contest in two. In a late-night development on Thursday at Jorhat, leaders of the two parties, headed by state Congress president Gaurav Gogoi and Raijor Dal chief Akhil Gogoi, signed the agreement.