The party's General Secretary and Tamil Nadu in-charge P Muralidhar Rao said Sasikala, whose hope of becoming the state's chief minister was dashed following her conviction by the Supreme Court in a corruption case, may have the advantage of being the AIADMK chief but she unlike late J Jayalalithaa does not have people's endorsement.
"The Governor (Ch Vidyasagar Rao) has to take a call in the context of the Supreme Court's verdict. It has become a new factor. He cannot go by mere numbers. He has to go by both numbers and credibility.
"He has to judge as to who is more viable and capable of giving a stable government," Rao told PTI.
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The state needs a clean and effective government, he said.
Though BJP has not made any official comment on the power struggle between caretaker Chief Minister O Panneerselvam and Sasikala, party leaders have indicated their support for Panneerselvam.
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Another BJP General Secretary Ram Madhav welcomed the Supreme Court's conviction of Sasikala in a disproportionate assets case.
The Goovernor's decision to wait for the court's verdict turned out to be right, he said, insisting that neither the BJP nor the central government had any role in the political developments in the state.
The ongoing political upheaval had legal as well as legislative dimensions, he said.
As far as forming a government in Tamil Nadu was concerned, AIADMK had a majority and it was up to the ruling party to prove it on the floor of the House, he said.