The UNPA meeting witnessed the participation of Left parties like CPI, CPI(M), RSP, and Forward Bloc and UNPA constituents like Telugu Desam Party, Asom Gana Parishad, Indian National Lok Dal and Jharkhand Vikas Party.
BSP supremo Mayawati also attended the meeting, and UNPA leaders hinted that she would soon be given a formal invitation to join the alliance.
TDP chief N Chandrababu Naidu also emphasised that UNPA would be garnering support of all like-minded parties.
Though as of now UNPA's one-point agenda is to pull down the UPA government by voting against it, there is every possibility that the third alliance would grow further.
"We will get support of more parties," AGP leader Brindaban Goswami told reporters, though he refused to comment on the possibility of any NDA constituent joining the UNPA.
Another leader of the UNPA told PTI that with JD(S), Ajit Singh's RLD and TRS also thinking on "similar lines" as UNPA, its strength would only grow in the coming days.