Tổng tuyển cử Ấn Độ tại Tamil Nadu năm 1998

The 1998 Indian general election polls in Tamil Nadu were held for 39 seats in the state. New elections were called when Indian National Congress (INC) left the United Front government led by I. K. Gujral, after they refused to drop the regional Dravida Munnetra Kazhagam (DMK) party from the government after the DMK was linked by an investigative panel to Sri Lankan separatists blamed for the killing of Rajiv Gandhi. The result was a landslide victory for the National Democratic Alliance (NDA) winning 30 seats, which helped result in Atal Bihari Vajpayee being sworn in as the 16th Prime Minister of India. J. Jayalalithaa and the All India Anna Dravida Munnetra Kazhagam, broke off from their long alliance with Indian National Congress and formed an alliance with Bharatiya Janata Party, by joining the National Democratic Alliance. This state proved to be very important in determining the prime minister, since the 18 seats of AIADMK proved valuable for BJP to hold power. That was short-lived, since the AIADMK left the alliance in less than a year, and BJP lost the vote of confidence resulting in fresh elections being called.