"There are 135 MLAs in the party, including the speaker, and the government has the support of all of them," he told reporters at the airport here, before leaving for Erode by road.
Stating that 109 MLAs had attended the meeting convened by him in Chennai yesterday, Palaniswami said the other party legislators could not be there due to various reasons.
His comments come a day after state Fisheries Minister D Jayakumar claimed that 111 MLAs had attended the meet convened by the chief minister.
According to reports, as many as 17 rebel AIADMK MLAs are currently lodged at a resort in neighbouring Puducherry.
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A group of 19 MLAs, loyal to Dhinakaran, had met Governor Ch Vidyasagar Rao on August 22, expressed lack of confidence in the chief minister and demanded his ouster.
This was a day after the merger of the AIADMK factions, led by Palaniswami and current deputy chief minister O Panneerselvam respectively.
In the 234-member Tamil Nadu Assembly, which has one seat vacant (R K Nagar, represented by late J Jayalalithaa), the AIADMK has 134 MLAs, excluding the speaker, while the DMK-led opposition has 98 legislators.
Replying to a question on the National Eligibility-cum- Entrance Test (NEET), Palaniswami said the state government had exerted "maximum pressure" on the Centre, seeking an exemption to Tamil Nadu from the ambit of the exam.
The recent suicide of a 17-year-old medical aspirant, Anitha, who was believed to be upset over her poor NEET score and the state not getting an exemption from the common eligibility test, had triggered an outrage in Tamil Nadu.
The daughter of a daily wage earner, Anitha was found hanging at her house in Ariyalur district on September 1.
On DMK working president M K Stalin's criticism about his government, Palaniswami said the opposition leader had been levelling allegations from day one and added that whatever he said was "incorrect".