For the BJP, the elections to the Lok Sabha are crucial, and Tamil Nadu assumes significance as it has stitched together a major alliance to try and win as many seats as possible. But for the ruling All India Anna Dravida Munnetra Kazhagam (AIADMK) as well as its main opposition, the Dravida Munnetra Kazhagam (DMK), it is the by-elections to the 18 assembly constituencies, that assume greater importance.
In the general elections this year, Tamil Nadu goes to the polls in the second round, on 18 April, to elect 39 members to the Lok Sabha.

