Informing this, State JD(U) President Basistha Narayan Singh told PTI that Krish Chander Singh is a Samata Party old timer.
Krish Chandra Singh has been an associate of Chief Minister Nitish Kumar from days of Samata Party and had unsuccessfully fought election from Madhuban seat in the same district in 1995. Like Kushwaha, he too hails from OBC Kushwaha caste.
He will take on BJP's Shyam Babu Prasad when Pipra goes to the polls in the fourth phase on November 1.
Kushwaha had tendered his resignation from the Nitish Kumar ministry on the same day after the episode became public.
The sting video provided fresh ammunition to BJP to attack the grand secular alliance in Bihar. Prime Minister Narendra Modi referred the episode prominently yesterday at his Jehanabad and Bhabua poll rallies to attack Lalu Prasad and Nitish Kumar.