India, May 13 -- The All India Anna Dravida Munnetra Kazhagam (AIADMK) plunged into crisis on Tuesday as two party factions differed on supporting the ruling alliance led by Tamilaga Vettri Kazhagam (TVK) and submitted rival claims of being the original outfit to the speaker.

The split came a day before Tamil Nadu chief minister C Joseph Vijay faces a trust vote on the floor of the House. Both sides claimed to be the real party - a replay of the crisis following former CM J Jayalalithaa's death-but it was unclear just how many lawmakers each faction of the AIADMK had.

On Tuesday, TVK lawmaker JCD Prabhakar was elected speaker unanimously. Soon after the election, one faction led by senior leader CV Shanmugam elected SP Velumani as the A...