Lal Muni Choubey had lost to RJD's Jagdanand Singh in the 2009 elections by a slender margin of around 2,000 votes.
Singh is again a nominee of Lalu Prasad's party from the seat. Lal Muni Choubey has represented Buxar four times in the Lok Sabha.
A close associate of former Prime Minister Atal Bihari Vajpayee, he has described BJP president Rajnath Singh as ”president of a party of slaves”.
The senior leader who associated himself with the Jan Sangh since the early 50s, has also announced that he would campaign against Narendra Modi at Varanasi and even in Vadodara in Gujarat.