The 1984 Indian general elections in Tamil Nadu were held for 39 Lok Sabha seats in the state. The result was a landslide victory for Indian National Congress and its ally All India Anna Dravida Munnetra Kazhagam, winning 37 out of 39 seats. The other 2 seats were won by the opposition, Dravida Munnetra Kazhagam. This marks the start of the dominance of INC-AIADMK, for the next decade winning 38 seats in 1989 election and all 39 seats in 1991 election. The allocation of seats were done what was later dubbed, "The M.G.R formula". Where the regional party would contest 70% of the assembly seats and the national party would be given 70% of the Lok Sabha seats.