Within the party, most belonging to the Vanniyakula Kshathriyas community also known as Vanniyars, dominant in northern Tamil Nadu and the Gounders, seen as movers and shakers of the western region favoured EPS.
Panneerselvam's loyalists mostly belong to the southern parts of the state and to the Mukkulathor community, a Most Backward Caste like Vanniyars. While OPS hails from the Mukkulathor community, EPS is a Gounder.
In OPS's home district of Theni, his supporters staged protest demonstrations and burnt effigies of EPS. The western region of Tamil Nadu is considered to be a traditional bastion of the AIADMK.
However, during the recently held local body polls, the AIADMK could not continue to hold on to such strongholds and lost to the DMK. OPS speaking in favour of talks to consider taking back into the party, V K Sasikala, confidante of late party supremo J Jayalalithaa and 'appearing to be soft' towards the DMK were among the EPS camp's grouses against him.