Polls in Gorakhpur and Phulpur Lok Sabha constituencies are scheduled to be held on March 11.
The seat in the two constituencies was vacated by Yogi Adityanath and his deputy chief minister Keshav Prasad Maurya in 2017.
Upendra Dutt Shukla will contest for BJP from Gorakhpur, Kushalendra Singh Patel will be its candidate from Phulpur.
Sunil Singh SP MLA said "All I know is BSP does not contest by-elections. At both places where by-elections are being held, SP will give a strong fight to defeat the BJP".
"The workers of the BSP want to eliminate BJP and that is why the members of Bahujan Samaj Party have decided to extend support and vote for Samajwadi Party candidate Nagendra Singh Patel in Phulpur by-poll," said Ashok Gautam, BSP Zonal Coordinator from Allahabad.
BSP in charge from Gorakhpur, Ghanshyam Chandra Kharwar, has declared his support to Samajwadi Party candidate Praveen Kumar Nishad in upcoming Gorakhpur by-poll.
All I know is BSP does not contest by-elections. At both places where by-elections are being held, SP will give a strong fight to defeat the BJP: Sunil Singh Yadav, SP on reports of BSP support to SP for #Gorakhpur & #Phulpur by-elections pic.twitter.com/jUWwmI7ija
Our workers want to eliminate BJP & that is why the members of Bahujan Samaj Party (BSP) have decided to extend support & vote for Samajwadi Party (SP) candidate Nagendra Singh Patel in Phulpur by-poll: Ashok Gautam, BSP Zonal Coordinator, Allahabad pic.twitter.com/R2vRFY6Lx5
The SP and BSP had in the past fought together against the BJP in 1993 UP assembly elections.
SP aur BSP, BJP ki aayi bhaadh ke kaaran ek hone ko majboor hui hain. Suna tha jab baadh aati hai, saanp aur nevla ek hi daal par baith jaate hain,dushmani chod dete hain. Jab pyaas lagti hai, sher aur bakri ek hi ghat par paani pee lete hain. Aisa hi ye gathbandhan hai: L Bajpai pic.twitter.com/kOcR8f7J5B