The meeting to be chaired by party President Sharad Yadav will be attended by office-bearers from various states including Bihar, the only province in which the party has a government.
From Bihar, Rajya Sabha MP R C P Singh, ministers in the state government Shyam Razak and Bheem Singh and Maulana Ghulam Rasool Balyavi are among the office-bearers, JD (U) general secretary Javed Raza said.
He said the meeting will review the performance of the party in Lok Sabha elections and deliberate future plans of the party for upcoming Assembly elections in Maharashtra and Haryana this year and Bihar and Jharkhand next year.
Nitish Kumar, Modi's arch-rival who had served as the Chief Minister of Bihar for the last nine years, stepped down on May 17 from his post following the drubbing of his party at the hands of the BJP-led NDA, which walked away with 31 of the 40 Lok Sabha seats in the state.
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Jitan Ram Manjhi, a Mahadalit leader succeeded Kumar as the Bihar Chief Minister, whose government was also supported by Kumar's arch-rival Lalu Prasad's Rashtriya Janta Dal.
Kumar had walked out of NDA and ended JD(U)'s 17-year-old relationship with BJP in June last year in protest against the elevation of Modi as BJP's prime ministerial candidate.
BJP, which had won 12 Lok Sabha seats in Bihar in 2009 after partnering with Nitish Kumar's JD(U), increased its tally in the state to 22 this time.