The defiant declaration from Shivpal came days after Samajwadi Party patriarch Mulayam Singh Yadav voiced his displeasure over the SP-Congress alliance and said he would not campaign for it.
"You make the government, we will make a new party after March 11," Shivpal, the estranged uncle of SP president and UP Chief Minister Akhilesh Yadav said, drawing a sharp retort from his nephew who warned in Etah that those working against the party will not be spared.
Addressing an election rally in Sikandaru, Akhilesh claimed he had the "blessings of Netaji (Mulayam)" and that "the entire family is one".
"There was a lot of speculation but I have for now filed my nomination papers as a Samajwadi Party candidate. But where will my people go?
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Shivpal's assertion, political analysts claim, could go against the SP-Congress combine, which has been hoping for a solid consolidation of Muslim voters in its favour.
Muslims, who had for decades since independence stood rock solid behind the Congress, drifted away from it and backed Mulayam's party in the aftermath of the Babri Masjid demolition.
A three-way split in Muslim votes--among Mulayam loyalists, SP-Congress combine and Mayawati's BSP--would benefit BJP, which is seeking to storm back to power in the key cow belt state after a hiatus of 15 years.
61-year-old Shivpal said he had entered the fray on an SP ticket going against his supporters who wanted him to contest as an independent.
He attacked Akhilesh over Mulayam's "humiliation", which he asserted "will not be tolerated".
Shivpal, who got the ticket after Mulayam intervened, said those who acknowledged "Netaji led the party's rise have now publicly humiliated him. I repeatedly requested Akhilesh not to insult Mulayam Singh but he did not listen.