Ghosi parliamentary constituency is one of the 80 Lok Sabha seats in Uttar Pradesh and covers parts of Mau and Ballia districts. The Bharatiya Janata Party (BJP) scored its first victory from Ghosi in 2014 when Harinarayan Rajbhar defeated sitting MP of BSP Dara Singh Chauhan by 1.46 lakh votes. 

Before Dara Singh won the seat in 2009, the parliamentary constituency was represented by Chandradeo Prasad Rajbhar of the Samajwadi Party (SP). He had defeated sitting MP Bal Krishna Chauhan of the BSP who had won in 1999. 

Before him, Kalpnath Rai won from Ghosi for four consecutive terms - 1989, 1991 (Congress), 1996 (Independent) and 1998 (Samata Party).

BJP has again fielded Harinarayan Rajbhar who is facing Atul Rai of the BSP and Congress' Balkrishna Chouhan, who won in 1999 on a BSP ticket. 

The constituency has a history of sending CPI candidates to Lok Sabha four times - 1962, 1967, 1971 and 1980. In 2019 election, the party has fielded Atul Kumar Anjaan from the Lok Sabha seat.  

Ghosi Lok Sabha constituency comprises five Vidhan Sabha (legislative assembly) segments: Mau, Madhuban, Ghosi, Muhammadabad Gohna (SC) (Mau district); Rasara (Ballia district).

In the last parliamentary elections in 2014, the BJP had won 71 seats in the state, securing 42.63 per cent of the votes. BJP ally Apna Dal bagged two more. The Samajwadi Party had won five seats with a vote share of 22.35 per cent. The BSP did not win any seat but secured 19.77 per cent votes. The Congress registered wins on two UP seats in 2014, bagging 7.53 per cent of the votes. 

UP is facing a triangular battle between the BJP, the Congress and BSP-SP-RLD alliance. Under the alliance's seat-sharing formula, the Mayawati-led Bahujan Samaj Party (BSP) is contesting on 38 Lok Sabha seats of the total 80 seats, Akhilesh Yadav's Samajwadi Party on 37 seats and the Chaudhary Ajit Singh's Rashtriya Lok Dal (RLD) on three seats. The alliance has left two for Congress' Sonia Gandhi (Rae Bareli) and Rahul Gandhi (Amethi). 

In the seventh phase of Lok Sabha polling, 13 seats in Uttar Pradesh - Maharajganj, Gorakhpur, Kushi Nagar, Deoria, Bansgaon, Ghosi, Salempur, Ballia, Ghazipur, Chandauli, Varanasi, Mirzapur and Robertsganj - are going for polls.

In 2014 election, all of these 13 seats were won by the BJP with Prime Minister Narendra Modi securing his victory from Varanasi. 

The counting of votes of the Lok Sabha election 2019 will be conducted on May 23.