Tamil Nadu and Kerala are voting in single-phase for 234 and 140 assembly constituencies respectively.
In TN, the ruling All India Anna Dravida Munnetra Kazhagam is contesting the poll in alliance with the Bharatiya Janata Party.
While M K Stalin's Dravida Munnetra Kazhagam has joined hands with the Congress.
Actor-turned-politician Kamal Hassan's party Makkal Neethi Maiam and T T V Dinakaran's Amma Makkal Munnetra Kazhagam (AMMK) are also in the fray.
In Kerala, Congress-led United Democratic Front is seeking to oust Chief Minister Pinarayi Vijayan's Left Democratic Front government, while BJP-led National Democratic Alliance is the third constituent in the triangular contest.
The presence of the BJP, which is positioning itself as a political alternative with candidates like the 'Metroman' E Sreedharan will impact the attempts made by both the LDF and the UDF to swing the constituencies to their favour.
Rediff Labs analysed the 2016 assembly election results to develop a Sentiment Meter for the 2021 battle in Tamil Nadu and Kerala.
A mathematical model is used to calculate how seat distribution will be altered as sentiment/percentage of votes towards a contesting political party changes.
Based on the change, each constituency is marked with the winning party.
A swing represents that the victory margin is close to the runner-up party.
Move the pointer on the Sentiment Meter (depending on who you think will get more votes) towards the political parties to see how the outcome is likely to change.
Tamil Nadu
Kerala
