The group, led by Leader of Opposition Chandrakant Kavlekar, met Assembly Speaker Rajesh Patnekar in the evening and gave him a letter, informing him about their breaking away from the party.
The Association of Democratic Reforms said Goa has set a unique record, which is "unparalleled" in the history of Indian democracy.
It is a record that the saffron party has created, where the majority of its legislators belonged to the minority community.
Syed Firdaus Ashraf lists seven states where the Grand Old Party suffered a severe setback.