Second time, citing neglect and humiliation in the party, the formerChief Minister and national Vice President of the BJP Kalyan Singh resigned from his post and the primary ship of the party on Tuesday, 20 January 2009. Next day after meeting Samajwadi Party leadersMulayam Singh Yadav and Amar Singh, Kalyan Singh announced that he would campaign for the SP in the 2009 Lok Sabha polls. Meanwhile his son Rajveer Singh, one of the main reasons of his disenchantment with the BJP, joined the Samajwadi Party. On 14 November 2009, Mulayam Singh Yadav said that the poor performance of the party at the FirozabadLok Sabha by-election was due to the loss of Muslim support because of Kalyan Singh. Snubbed by Mulayam Singh Yadav, former Uttar Pradesh chief minister Kalyan Singh on 15 November 2009, Kalyan Singh reaffirmed his allegiance to the BJP and the Rashtriya Swayamsevak Sangh and indicated he was willing to rejoin BJP while his son Rajbir Singh resigned from SP. In January 2010, he announced the formation of a new Hindutva-oriented political party, the Jan Kranti Party, but chose to take the role of patron while his son became the leader. At the time of the founding of the new party, Kalyan Singh declared that the intention of the party is to contest all 403 constituencies in the 2012 Uttar Pradesh Legislative Assembly election.
On 21 January 2013 Kalyan Singh announced the merger of his both formed parties, Rashtriya Kranti Party which he formed after get suspended from BJP in 1999 and also merger of his later founded party in 2010, Jan Kranti Party with his former parental party, Bhartiya Janta Party during the Atal Shankhnaad Rally of BJP in Lucknow's Jhulelal Park. While former chief minister Kalyan Singh chose not to "officially join the BJP" on the advice of senior party leaders. The reason for this was that BJP leaders do not want Kalyan Singh, a Lok Sabha member from Etah elected in 2009 parliamentary election, should resign from parliament. With an arrangement for over 8,000 at the rally, the BJP state leadership had been claiming that 50,000 people would be present, excluding 12,000 RKP workers, who too had joined the BJP along with their leader Rajveer Singh.