New Delhi, August 1 (IANS): Seeking to rally opposition parties, West Bengal Chief Minister Mamata Banerjee on Wednesday met UPA Chairperson Sonia Gandhi and leaders of several other parties and declared that her priority is to defeat BJP in the Lok Sabha elections next year with the issue of prime ministership to be settled collectively later. She also kept up her attack on the BJP over the exclusion of 40 lakh names from the National Register of Citizens for Assam, saying they were playing with fire and were using offensive language against those excluded. Banerjee personally invited Sonia Gandhi, Rahul Gandhi and other opposition leaders for the January 19 mega rally she has planned in Kolkota. The Kolkata rally is expected to help Banerjee emerge as the pivot of opposition efforts to dislodge the Narendra Modi government in 2019 Lok Sabha polls. "There will be collective face. Ours is a collective family. Priority is to defeat BJP. If, to defeat BJP, we can fight collectively inside Parliament then why can we not outside...I haven't come to talk about my state," Banerjee said after her meeting with Sonia Gandhi and Congress President Rahul Gandhi. The meeting with the Gandhis capped a day of hectic activities in Parliament House where Banerjee met leaders of various parties including Shiv Sena, AIADMK, Samajwadi Party, TDP, YSCRP, DMK, RJD, Kerala Congress-Mani. She also called on JD-S leader and former Prime Minister H.D. Deve Gowda in Karnataka Bhavan and senior BJP leader L. K. Advani in his chamber in Parliament. While Shiv Sena is a constituent of the the BJP-led NDA, AIADMK is friendly towards it. Banerjee arrived in Delhi on Monday and met Nationalist Congress Party chief Sharad Pawar on Tuesday. She also met dissident BJP MP Shatrughan Sinha and former union ministers Yashwant Sinha and Ram Jethmalani. She had visited the national capital in March also and met opposition leaders.