Why Bharatiya Janata's playbook strategy will not work in Tamil Nadu?

In Tamil Nadu, the Bharatiya Janata Party (BJP) has been unable to grow rapidly by absorbing its ally AIADMK, as it has swallowed up other parties in the states of Maharashtra, Goa, and Karnataka due to the constant rejection of its policy positions. 

The fact that only the AIADMK has the vote bank to challenge the DMK in Tamil Nadu, and the fact that the BJP has not been able to achieve major victories despite repeated attempts in several elections, has hindered the party's growth in Tamil Nadu. 

In the case of Maharashtra, in the last assembly elections, the BJP emerged as the single largest party in the assembly. Shiv Sena, which was on the side of BJP at that time, was drawn to his side by Sharad Pawar and formed an alliance called "Maha Vikas Akadi" along with the Congress party. 

Basically, like the Bharatiya Janata Party, the Shiv Sena is a Hindutva-based party, so alliances with the Congress and the Nationalist Congress have not bonded enough. Using this opportunity, the BJP formed a dissident group under the leadership of Eknath Shinde and broke the Shiv Sena party. 

Even though the BJP was the strongest party after the assembly elections in Karnataka state as well, the Congress vigorously fielded the secular Janata Dal to prevent the BJP from taking over. 
As in Maharashtra, there is a strong BJP on one side and a majority on the other side. In such an environment, the BJP won majority by making arrangements for the resignation of many legislators belonging to the opposition alliance. 

However, such a situation has not occurred in Tamil Nadu so far. DMK and ADMK. It is noteworthy that even though the BJP formed an alliance with both the parties, the Dravidian parties became the leading parties of the alliance in Tamil Nadu. 

Hence, BJP has not got much chance to attract MLAs to its side. Similarly, BJP's alliance strategies did not work well in the state of Bihar. Nitish Kumar, who became the leader of United Janata Dal, came to power as Chief Minister with the support of BJP, but later got the support of Rashtriya Janata Dal, pushing BJP to the opposition ranks. 

In some small states like Goa, BJP and Congress have attracted legislators from other parties to maintain their political supremacy. Similarly, Puducherry is also part of the coalition government.  But in Tamil Nadu DMK and AIADMK parties continue to be prominent. That's why strategies like breaking up parties or changing alliances to suit the BJP is an unatainable goald for the BJP in Tamil Nadu. BJP wants to change this situation, however it is equivalent to peeling the fiber from the stone.