The announcement was made after AICC general secretary Ajoy Kumar held a meeting with CPI-M state secretary Jitendra Choudhury on Friday evening.
Polling will take place in 3,328 polling booths, out of which 1,100 are sensitive and 28 are categorised as critical.
Communist Party of India-Marxist general secretary Sitaram Yechury on Friday said though there is no pre-poll adjustment with the Tipra Motha, there can be local-level understanding with the tribal party, which has emerged as the third pole in the upcoming Tripura elections.
Uncertain political times in Meghalaya, Nagaland, Tripura.
In the second phase on April 18, 97 seats,spread across 13 states and one Union Territory, will go to the polls.
In the third phase of the Lok Sabha election on April 23, 116 seats spread across 13 states and two Union Territories, will go to the polls.
Finance Minister Arun Jaitley appealed to parties to rise above partisan considerations to support it.