[7][8][9] LJP contested the polls in alliance with the Indian National Congress and the Rashtriya Janata Dal and won four Lok Sabha seats.

Elections were again held in October month in which NDA came to power with a thumping majority with Nitish Kumar as the Chief Minister.

Jan Morcha the party founded by former Prime Minister Vishwanath Pratap Singh was merged with the LJP in March 2009.

[13] On the more disastrous side LJP suffered a major jolt when, its entire Jharkhand Unit merged with the Congress before the 2009 elections citing that Paswan had ignored them.

In 2017, Pashupati Paras brother of Ram Vilas was inducted into Nitish Kumar cabinet as Minister of Animal & Fish Resources after Janata Dal (United) joined BJP-led National Democratic Alliance.

[20] The series of dramatic events came months after the Bihar Assembly elections in October–November last year, in the run-up to which Chirag Paswan had attacked the JD(U) and Chief Minister Nitish Kumar, and stepped out of the NDA, all along maintaining that he wanted to work with the BJP.

[21] Then Chirag Paswan called a national executive meeting and removed the five rebel MPs from the party's primary membership.

[22][23] The five MPs named Pashupati Kumar Paras (Hajipur), Mehboob Ali Qaisar (Khagaria), Chandan Singh (Nawada), Veena Devi (Vaishali) and Prince Raj (Samastipur) met Lok Sabha Speaker Om Birla next day saying that they have elected Paras as LJP parliamentary party leader and Kaiser as deputy leader.

In a tweet, he said he made efforts to keep the party founded by his father Ram Vilas Paswan and his family together but failed.

Paswan also shared a letter he had written to Paras, the youngest brother of his father, in March in which he had highlighted his uncle's unhappiness over a number of issues, including his elevation as the party president.